wimp

 
Pronunciation: /wɪmp/
informal

noun

  • a weak and cowardly or unadventurous person.

verb

[no object] (wimp out)
  • fail to do or complete something as a result of fear or lack of confidence: anyone who wimped out because of the weather missed the experience of a lifetime

Derivatives

wimpiness

noun

wimpish

adjective

wimpishly

adverb

wimpishness

noun

wimpy

adjective (wimpier, wimpiest)

Origin:

1920s: origin uncertain, perhaps from whimper