weak

/ˈwēk/

Middle English weike, from Old Norse veikr; akin to Old English wīcan to yield, Greek eikein to give way, Sanskrit vijate he speeds, flees

adjective

  1. lacking strength: such as

  2. deficient in physical vigor : feeble, debilitated

  3. not able to sustain or exert much weight, pressure, or strain

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. feeble suggests extreme weakness inviting pity or contempt.

noun

  1. anthropic principle

noun

  1. a fundamental physical force that governs interactions between hadrons and leptons (as in the emission and absorption of neutrinos) and is responsible for particle decay processes (such as beta decay) in radioactivity, that is 10-5 times the strength of the strong force, and that acts over distances smaller than those between nucleons in an atomic nucleus —called also weak interaction, weak nuclear force