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toughened

ADJECTIVE

callous

Synonyms

STRONGEST

apathetic careless cold-blooded heartless indifferent insensitive uncaring unsympathetic

STRONG

hardened indurated inured unbending

WEAK

blind to case-hardened cold deaf to hard hard-bitten hard-boiled hardhearted impassive impenitent inflexible insensate insensible insentient obdurate soulless spiritless stiff stony stubborn thick-skinned torpid tough unaffected uncompassionate unconcerned unfeeling unimpressionable unresponsive unsusceptible

Antonyms

STRONGEST

caring compassionate concerned feeling interested kind merciful mindful nice responsive sympathetic

WEAK

sensitive tender

ADJECTIVE

hardened

Synonyms

STRONGEST

coldhearted seasoned

STRONG

accustomed benumbed callous habituated indurated inured prepared steeled unbending

WEAK

case-hardened contemptuous cruel disdainful hard as nails hard-bitten hard-boiled hardhearted heartless impenetrable impious inaccessible irreverent obdurate obtuse resistant unashamed uncaring uncompassionate unemotional unrepenting unsubmissive

Antonyms

WEAK

compassionate feeling kind nice sympathetic

ADJECTIVE

seasoned

Synonyms

STRONGEST

accomplished competent hardened knowledgeable qualified skillful trained wise

STRONG

instructed matured practiced prepared tested tried vet weathered

WEAK

adept battle-scarred been around been there expert familiar old hand pro professional veteran worldly worldly wise

Antonyms

STRONGEST

ignorant incapable inept inexperienced unable unskilled untalented

ADJECTIVE

thick-skinned

Synonyms

WEAK

benumbed callous coldhearted hard as nails hardhearted insensitive seasoned tough unbending unfeeling

ADJECTIVE

unbreakable

Synonyms

WEAK

adamantine armored brass-bound durable everlasting firm incorruptible indestructible infrangible invulnerable lasting nonbreakable perdurable resistant rugged shatterproof solid tight unshakable unyielding

Antonyms

WEAK

breakable delicate fragile weak

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.

The windows, vulnerable to shattering in extreme heat, are made of a toughened glass.

From Los Angeles Times • Mar. 2, 2026

"You never get used to it, but I think we've toughened up and we understand there is no choice," he told AFP.

From Barron's • Mar. 1, 2026

The news comes ahead of language requirements for citizenship being toughened for everyone else under new immigration rules from January 1.

From Barron's • Dec. 31, 2025

Germany, Denmark, Sweden, the Netherlands and Italy have all toughened immigration enforcement in recent years in an attempt to stop a surge in asylum seekers.

From The Wall Street Journal • Nov. 17, 2025

Tree-ear’s hands were toughened by calluses from ax and spade, his arms strengthened by endless work; he gave not a single step of ground to the robber.

From "A Single Shard" by Linda Sue Park

toughened

Example Sentences

Related Words