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Showing results for improper. Search instead for impropri.
Definitions

improper

[im-prop-er] / ɪmˈprɒp ər /
ADJECTIVE
not suitable
Synonyms
STRONGEST
awkward erroneous false ill-advised imprudent inaccurate inadmissible inappropriate incorrect irregular unwarranted wrong
WEAK
abnormal at odds bad form discordant discrepant ill-timed inadvisable inapplicable inapposite inapt incongruous inexpedient infelicitous inharmonious inopportune ludicrous malapropos odd off-base out of place out-of-season preposterous unapt unbefitting uncalled-for uncomely undue unfit unfitting unseasonable unsuitable unsuited untimely
Antonyms
STRONGEST
OK acceptable accurate appropriate correct honest reasonable right suitable true valid wise
WEAK
de rigueur decent fitting formal good moral proper uncorrupt
ADJECTIVE
vulgar, immoral
Synonyms
STRONGEST
indecent unethical unjust unseemly untoward wrong wrongful
WEAK
blue dirty impolite indecorous indelicate lewd malodorous naughty risqué rough salacious suggestive unbecoming unconventional unequitable ungodly unrighteous unrightful
Antonyms
STRONGEST
acceptable appropriate decent ethical fair good honest just moral proper right suitable
WEAK
correct fitting formal uncorrupt

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.

Other suspected fraud schemes involve enrolling beneficiaries without their consent and improper billing practices.

From MarketWatch • Mar. 24, 2026

The Football Association said Tudor "allegedly acted in an improper manner during a post-match interview by making comments that imply bias and/or question integrity and/or are personally offensive in relation to a match official".

From BBC • Mar. 19, 2026

A federal judge last week ruled the subpoenas were improper and appeared designed to “harass and pressure” Powell into lowering rates or resigning.

From The Wall Street Journal • Mar. 19, 2026

CHP officials regularly conduct enforcement operations targeting improper use of carpool lanes, including drivers attempting to evade rules by using mannequins or other objects to mimic passengers.

From Los Angeles Times • Mar. 17, 2026

We knew nothing improper had happened on our field trip.

From "Malala: The Girl Who Stood Up for Education and Changed the World" by Malala Yousafzai

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