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Definitions

thick

[thik] / θɪk /
ADJECTIVE
deep, bulky
Synonyms
STRONGEST
broad chunky fat hard heavy massive wide
STRONG
compact concrete firm high husky solid squat
WEAK
blubbery burly consolidated obese pudgy stocky stubby stumpy substantial thickset
Antonyms
STRONGEST
easy little narrow restricted skinny slight slim small thin
STRONG
flexible loose low slack soft weak
WEAK
attenuated clear diluted intelligent reasonable sensible smart uncrowded unfriendly unsociable watery wise
ADJECTIVE
concentrated, dense
Synonyms
STRONGEST
deep gooey heavy impenetrable opaque stiff syrupy
STRONG
close compact concrete firm set solid
WEAK
caked clabbered clotted coagulated compressed condensed congealed consolidated crowded curdled fixed gelatinous gloppy gummous gummy gunky impervious jelled jellied ossified ropy sloppy solidified thickened turbid viscid viscous vitrified
Antonyms
STRONGEST
clear easy light soft trivial understandable
STRONG
flexible indefinite loose slack
WEAK
attenuated diluted intelligent reasonable sensible slight smart thin uncrowded unfriendly unsociable watery wise
ADJECTIVE
crowded, packed
Synonyms
STRONGEST
abundant dense full impenetrable tight
STRONG
close compact great rank solid
WEAK
brimming bristling bursting chock-full compressed concentrated condensed considerable covered crammed crawling with frequent heaped impervious inspissated like sardines localized multitudinous numerous populated populous profuse replete several swarming teeming
Antonyms
STRONGEST
open sparse thin
STRONG
loose
WEAK
attenuated clear diluted intelligent reasonable sensible slight smart uncrowded unfriendly unsociable watery wise
ADJECTIVE
stupid
Synonyms
STRONGEST
dense dull
WEAK
blockheaded boneheaded brainless dim-witted doltish dopey dumb ignorant insensitive moronic numbskulled obtuse slow slow-witted thickheaded
Antonyms
STRONGEST
intelligent smart
WEAK
attenuated clear diluted loose reasonable sensible slight thin uncrowded unfriendly unsociable watery wise
ADJECTIVE
dense (referring to weather)
Synonyms
STRONGEST
dull heavy impenetrable muddy soupy
WEAK
cloudy foggy indistinct obscure turbid
Antonyms
STRONGEST
bright clear light
WEAK
attenuated diluted intelligent loose reasonable sensible slight smart thin uncrowded unfriendly unsociable watery wise
ADJECTIVE
friendly
Synonyms
STRONG
close cordial familiar intimate
WEAK
chummy confidential devoted hand in glove inseparable on good terms
Antonyms
STRONG
aloof cool unfriendly
WEAK
attenuated clear diluted intelligent loose reasonable sensible slight smart thin uncrowded unsociable watery wise
ADJECTIVE
unreasonable
Synonyms
STRONGEST
thin
STRONG
flimsy
WEAK
excessive implausible improbable inconceivable incredible too much unbelievable unconvincing unfair unjust unsubstantial
Antonyms
WEAK
attenuated clear diluted intelligent loose reasonable sensible slight smart uncrowded unfriendly unsociable watery wise

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 his thick skin will do nothing to prevent it.

From The Wall Street Journal • Apr. 21, 2026

In the image he has dark skin, receding curly hair, a thick handlebar mustache, deep-set eyes and a dark suit emblazoned with a crest.

From The Wall Street Journal • Apr. 18, 2026

"He talks a good game but nothing ever changes," said David Gilhooly, 52, who had a long, thick beard and wore a heavy coat as the Canadian winter dragged into April.

From Barron's • Apr. 11, 2026

You have been there through thick and thin!

From BBC • Apr. 7, 2026

Luc raked his hand through his thick hair.

From "The Brightwood Code" by Monica Hesse