weak, feeble, frail, fragile, infirm, decrepit mean not strong enough to endure strain, pressure, or strenuous effort. weak applies to deficiency or inferiority in strength or power of any sort.

If you describe someone as weak, you mean that they are not very confident or determined, so that they are often frightened or worried, or easily influenced by other people.

A weak reason or excuse is one that you cannot believe because there is not enough proof to support it.

Define weak. weak synonyms, weak pronunciation, weak translation, English dictionary definition of weak. not strong; feeble; lacking firmness or force of will: The illness had made her weak.

1 day ago · When we say that an acid is weak, we refer only to its degree of dissociation, not to its degree of corrosiveness; but it is true that those two traits often correlate, though.

WEAK definition: not strong; liable to yield, break, or collapse under pressure or strain; fragile; frail. See examples of weak used in a sentence.

Definition of weak adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Weak, decrepit, feeble, weakly imply a lack of strength or of good health. Weak means not physically strong, because of extreme youth, old age, illness, etc.: weak after an attack of fever.

Weakness is a symptom of many different medical conditions. [1] The causes are many and can be divided into conditions that have true or perceived muscle weakness. True muscle …

Nov 8, 2025 · Learn how the U.S. dollar's strength or weakness affects global trade, investments, and currency exchange. Discover the implications for businesses and consumers.