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.

This is Hyrox, the fitness competition that is rivaling triathlons and obstacle-course races to become the exercise challenge all the fittest people you know are signing up for.

From The Wall Street Journal • Feb. 27, 2026

New CEO Greg Abel might favor survival of the fittest.

From The Wall Street Journal • Jan. 22, 2026

Ilione has added both muscle and mindset in recent months, however, telling BBC Radio Leicester last week that he is the "strongest and fittest" he has ever been.

From BBC • Oct. 20, 2025

"I am back and really enjoying my rugby, I am feeling the fittest I have ever done," Breach told BBC Sport.

From BBC • Aug. 30, 2025

But I told myself that in nature it’s survival of the fittest.

From "Crenshaw" by Katherine Applegate