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Definitions

insouciance

[in-soo-see-uhns, an-soo-syahns] / ɪnˈsu si əns, ɛ̃ suˈsyɑ̃s /
NOUN
apathy
Synonyms
STRONGEST
indifference insensitivity lethargy
STRONG
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness heedlessness insensibility lassitude listlessness passiveness passivity stoicism unconcern unresponsiveness
WEAK
halfheartedness hard shell
Antonyms
STRONG
interest
WEAK
care concern feeling passion sensitivity sympathy warmth
NOUN
disregard
Synonyms
STRONGEST
apathy contempt disdain disrespect inattention indifference neglect negligence scorn
STRONG
brush-off disesteem disfavor disinterest forgetting heedlessness inadvertence lassitude lethargy listlessness neglecting oblivion omission omitting overlooking oversight slight slighting unconcern unmindfulness
WEAK
the cold shoulder
Antonyms
STRONGEST
admiration approval care concern esteem feeling interest love regard respect sympathy
STRONG
remembrance
WEAK
attention honor note
NOUN
ease
Synonyms
STRONGEST
aplomb composure dexterity efficiency familiarity flexibility fluency nonchalance poise quickness simplicity
STRONG
adroitness affability breeze cinch cleverness dispatch easygoingness effortlessness expertise expertness informality knack liberty naturalness pushover readiness setup skillfulness smoothness snap unaffectedness unconstraint
WEAK
child's play duck soup relaxedness smooth sailing unreservedness
Antonyms
STRONGEST
inability
WEAK
excitableness inhibition restriction
NOUN
hebetude
Synonyms
STRONG
apathy coma disinterest disregard drowsiness dullness heedlessness idleness impassivity inaction inactivity inanition indifference indolence inertia inertness languor lassitude listlessness
WEAK
languidness leadenness passiven
Antonyms
STRONG
action concern feeling interest liveliness regard sympathy
NOUN
impassivity
Synonyms
STRONG
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness heedlessness indifference insensibility insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidity stolidness unconcern unresponsiveness
WEAK
halfheartedness incuriosity incuriousness insensibleness uninterest
Antonyms
STRONG
caring compassion concern interest liveliness regard sympathy
NOUN
inconsequence
Synonyms
STRONG
alienation aloofness apathy callousness carelessness coldness coolness detachment disdain disinterest disinterestedness dispassion disregard equity heedlessness immunity impartiality impassiveness impassivity inattention inertia insensitivity insignificance isolationism lack lethargy listlessness negligence neutrality nonchalance noninterference objectivity stoicism torpor unconcern unimportance unmindfulness
WEAK
cold shoulder cold-bloodedness inconsequentiality inconsequentialness insignificancy
Antonyms
STRONG
activity attention bias concern esteem interest life liveliness respect sympathy
NOUN
inconsequentiality
Synonyms
WEAK
alienation aloofness apathy callousness carelessness cold shoulder cold-bloodedness coldness coolness detachment disdain disinterest disinterestedness dispassion disregard equity heedlessness immunity impartiality impassiveness impassivity inattention inconsequence inconsequentialness inertia insensitivity insignificance insignificancy isolationism lack lethargy listlessness negligence neutrality nonchalance noninterference objectivity stoicism torpor unconcern unimportance unmindfulness
NOUN
inconsequentialness
Synonyms
WEAK
alienation aloofness apathy callousness carelessness cold shoulder cold-bloodedness coldness coolness detachment disdain disinterest disinterestedness dispassion disregard equity heedlessness immunity impartiality impassiveness impassivity inattention inconsequence inconsequentiality inertia insensitivity insignificance insignificancy isolationism lack lethargy listlessness negligence neutrality nonchalance noninterference objectivity stoicism torpor unconcern unimportance unmindfulness
NOUN
incuriosity
Synonyms
WEAK
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness halfheartedness heedlessness impassivity incuriousness indifference insensibility insensibleness insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidity stolidness unconcern uninterest unresponsiveness
NOUN
incuriousness
Synonyms
WEAK
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness halfheartedness heedlessness impassivity incuriosity indifference insensibility insensibleness insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidity stolidness unconcern uninterest unresponsiveness
NOUN
indifference
Synonyms
STRONGEST
alienation apathy callousness carelessness disdain disinterest disregard inattention inertia insensitivity lack negligence nonchalance
STRONG
aloofness coldness coolness detachment disinterestedness dispassion equity heedlessness immunity impartiality impassiveness impassivity isolationism lethargy listlessness neutrality noninterference objectivity stoicism torpor unconcern unmindfulness
WEAK
cold shoulder cold-bloodedness
Antonyms
STRONGEST
attention esteem respect
STRONG
bias
WEAK
caring compassion concern feeling interest involvement regard sympathy
NOUN
informality
Synonyms
STRONGEST
casualness familiarity nonchalance simplicity spontaneity
STRONG
affability aplomb breeze cinch cleverness composure dexterity dispatch easiness easygoingness efficiency effortlessness expertise expertness flexibility fluency knack liberty naturalness poise pushover quickness readiness setup skillfulness smoothness snap unaffectedness unceremoniousness unconstraint unrestraint
WEAK
child's play duck soup relaxedness smooth sailing unreservedness
Antonyms
STRONG
inability
NOUN
insensibleness
Synonyms
WEAK
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness halfheartedness heedlessness impassivity incuriosity incuriousness indifference insensibility insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidity stolidness unconcern uninterest unresponsiveness
NOUN
insignificancy
Synonyms
WEAK
alienation aloofness apathy callousness carelessness cold shoulder cold-bloodedness coldness coolness detachment disdain disinterest disinterestedness dispassion disregard equity heedlessness immunity impartiality impassiveness impassivity inattention inconsequence inconsequentiality inconsequentialness inertia insensitivity insignificance isolationism lack lethargy listlessness negligence neutrality nonchalance noninterference objectivity stoicism torpor unconcern unimportance unmindfulness
NOUN
languidness
Synonyms
WEAK
apathy coma disinterest disregard drowsiness dullness hebetude heedlessness idleness impassivity inaction inactivity inanition indifference indolence inertia inertness languor lassitude leadenness listlessness passiveness phlegm sleep sleepiness sloth slowness sluggishness slumber stupor supineness torpidity torpidness torpor unconcern unmindfulness
NOUN
leadenness
Synonyms
WEAK
apathy coma disinterest disregard drowsiness dullness hebetude heedlessness idleness impassivity inaction inactivity inanition indifference indolence inertia inertness languidness languor lassitude listlessness passiveness phlegm sleep sleepiness sloth slowness sluggishness slumber stupor supineness torpidity torpidness torpor unconcern unmindfulness
NOUN
lethargy
Synonyms
STRONGEST
apathy disinterest drowsiness inactivity
STRONG
coma disregard dullness hebetude heedlessness idleness impassivity inaction inanition indifference indolence inertia inertness languor lassitude listlessness passiveness phlegm sleep sleepiness sloth slowness slumber stupor torpidity torpidness torpor unconcern unmindfulness
WEAK
supineness
Antonyms
STRONG
action awakening concern consciousness interest liveliness regard wakefulness
WEAK
activity busyness energy life vigor vitality vivaciousness vivacity
NOUN
nonchalance
Synonyms
STRONGEST
casualness indifference
STRONG
composure disregard
NOUN
phlegm
Synonyms
STRONG
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness heedlessness impassivity indifference insensibility insensitivity lassitude lethargy listlessness passiveness passivity stoicism stolidity stolidness unconcern unresponsiveness
WEAK
halfheartedness incuriosity incuriousness insensibleness uninterest
Antonyms
STRONG
caring compassion concern interest liveliness regard sympathy
NOUN
stolidity
Synonyms
STRONG
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness heedlessness impassivity indifference insensibility insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidness unconcern unresponsiveness
WEAK
halfheartedness incuriosity incuriousness insensibleness uninterest
Antonyms
STRONG
caring compassion concern interest liveliness regard sympathy
NOUN
stolidness
Synonyms
STRONG
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness heedlessness impassivity indifference insensibility insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidity unconcern unresponsiveness
WEAK
halfheartedness incuriosity incuriousness insensibleness uninterest
Antonyms
STRONG
caring compassion concern interest liveliness regard sympathy
NOUN
torpidity
Synonyms
STRONG
apathy coma disinterest disregard drowsiness dullness hebetude heedlessness idleness impassivity inaction inactivity inanition indifference indolence inertia inertness languor lassitude listlessness passiveness phlegm sleep sleepiness sloth slowness sluggishness slumber stupor torpidness torpor unconcern unmindfulness
WEAK
languidness leadenness supineness
Antonyms
STRONG
action awakening concern consciousness feeling interest liveliness regard sympathy wakefulness
NOUN
unconcern
Synonyms
STRONG
apathy indifference nonchalance
Antonyms
STRONG
concern feeling interest sympathy
NOUN
uninterest
Synonyms
WEAK
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness halfheartedness heedlessness impassivity incuriosity incuriousness indifference insensibility insensibleness insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidity stolidness unconcern unresponsiveness
NOUN
unresponsiveness
Synonyms
STRONG
aloofness coldness coolness detachment disinterest dispassion disregard dullness emotionlessness heedlessness impassivity indifference insensibility insensitivity lassitude lethargy listlessness passiveness passivity phlegm stoicism stolidity stolidness unconcern
WEAK
halfheartedness incuriosity incuriousness insensibleness uninterest
Antonyms
STRONG
caring compassion concern interest liveliness regard sympathy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

And with the new millennium fast approaching, the consumer needed Jacobs’ brand of sartorial insouciance.

From Salon • Mar. 27, 2026

And he has done so with a light-fingered insouciance that makes every scene incandescent with funny contemporary allusions.

From The Wall Street Journal • Feb. 19, 2026

Allen says some of the details have been exaggerated, but her pain is tangible amongst the artful pop beats and faux insouciance.

From BBC • Dec. 20, 2025

Fans adored his playful insouciance as he celebrated difference and inclusivity.

From Salon • Jan. 30, 2025

The staffs insouciance may have reflected the infrequency of acute injuries.

From "Big Science" by Michael Hiltzik

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.