From under- + witted. <span class="searchmatch">underwitted</span> (comparative more <span class="searchmatch">underwitted</span>, superlative most <span class="searchmatch">underwitted</span>) Weak in intellect; half-witted; silly....
under-wit From under- + wit. underwit (plural underwits) An <span class="searchmatch">underwitted</span> person; a nitwit. c. 1699-1736, Jonathan Swift, Of the Education of Ladies That...