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fittest

ADJECTIVE

suitable, appropriate

Synonyms

STRONGEST

able apt capable competent happy prepared qualified wise

STRONG

adapted becoming befitting correct correspondent deserving due equipped expedient fitted fitting meet ready right trained worthy

WEAK

adequate advantageous apposite beneficial comely comme il faut conformable convenient desirable equitable favorable feasible felicitous good enough just likely opportune practicable preferable proper rightful seasonable seemly tasteful timely well-suited

Antonyms

STRONGEST

ignorant incapable incompetent inept stupid unable unskilled

STRONG

imprecise improper inaccurate inappropriate incorrect unbecoming unfit unfitting unprepared unseemly unsuitable untrained unworthy wrong

WEAK

inadequate poor unsuited weak

ADJECTIVE

healthy, in good physical shape

Synonyms

STRONGEST

able-bodied competent robust slim strapping toned

STRONG

hale muscled sound trim well

WEAK

fit as a fiddle in good condition up to snuff wholesome wrapped tight

Antonyms

STRONGEST

infirm weak

STRONG

sick unhealthy

WEAK

inadequate inappropriate incorrect poor unfit unsuitable unsuited unworthy

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.

New CEO Greg Abel might favor survival of the fittest.

From The Wall Street Journal • Jan. 22, 2026

Never before had an African country hosted this weeklong series of competitions, in which the planet’s best cyclists assemble to determine the year’s fittest and the fastest.

From The Wall Street Journal • Oct. 10, 2025

Once described as the "fittest" match official in global football and a martial arts expert, he is now learning to walk again after a rare condition left him paralysed from the waist down.

From BBC • Apr. 2, 2025

That leaves Mark Delgado as the fittest replacement yet he pales as a playmaker compared with the other two.

From Los Angeles Times • Dec. 5, 2024

As animals struggled to survive, the best-adapted variants—the fittest mutations—were serially selected.

From "The Gene" by Siddhartha Mukherjee