Weak Definition

wēk
weaker, weakest
adjective
weaker, weakest
Lacking in strength of body or muscle; not physically strong.
Webster's New World
Lacking vitality; feeble; infirm.
Webster's New World
Lacking in moral strength or willpower; yielding easily to temptation, the influence of others, etc.
Webster's New World
Lacking in mental power, or in the ability to think, judge, decide, etc.
Webster's New World
Lacking in strength of material or construction; unable to resist strain, pressure, etc.; easily torn, broken, bent, etc.
A weak railing.
Webster's New World

Other Word Forms of Weak

Adjective

Base Form:
weak
Comparative:
weaker
Superlative:
weakest

Origin of Weak

  • From Middle English weike, from Old Norse veikr (“weak"), cognate with Old English wÄ«can (“to yield"). Proto-Indo-European base *weik- (“to bend, wind"). Replaced the native Old English wāc. Compare German weich, Dutch week.

    From Wiktionary

  • Middle English weike from Old Norse veikr pliant weik-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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