ˈwitlə̇s adjective
Etymology: Middle English witles, from Old English witlēas, from wit (II) + -lēas -less
1. : destitute of understanding : wanting intelligence, wisdom, or good sense : lacking or not guided by judgment : foolish , heedless , ill-judged
interrupted by some witless coxcombs
witless obstinacy
2. : mentally deranged : out of one's wits : insane , mad
3.
a. : deficient in mental capacity : having undeveloped or impaired intellectual power : lacking in intelligence : dull-witted : stupid
b. : incapable of understanding or apprehending something
witless to discern true values
4. : lacking knowledge, awareness, or consciousness of something
witless of the storm his words excite — Peter Crook
5. : destitute of wit
a matter-of-fact speech entirely witless