As adjectives the difference between wispiest and wimpiest
is that wispiest is superlative of wispy while wimpiest is superlative of wimpy.
wispiest
English
Adjective
(head)
(wispy)
wispy
English
Adjective
(
er)
Consisting of or resembling a wisp; like a slender, flexible strand or bundle.
- The wispy smoke rose from chimneys all around town.
wimpiest
English
Adjective
(head)
(wimpy)
wimpy
English
Adjective
(er)
Having the characteristics of a wimp; feeble, indecisive, cowardly.