Synonyms for "weak"
Looking for another word for "weak"? Common synonyms include feeble, frail, fragile, infirm.
Quick answer
The best synonym for "weak" depends on what you mean. Pick the kind of weakness: flimsy (argument), feeble (body), tenuous (logic), thin (excuse).
Synonym groups by meaning
"weak" meaning: lacking physical strength
feeblefrailfragileinfirm
"weak" meaning: lacking force or persuasiveness
flimsyunconvincingthintenuousshaky
"weak" meaning: inadequate or substandard
inadequatedeficientlackingsubpar
Choose by tone or context
A thesaurus gives you a list; choosing is the next step. Match the synonym to the dimension of meaning you want — formal vs. casual, intense vs. softened, professional vs. conversational.