simple present does, present participle doing or doth, simple past did or <span class="searchmatch">didde</span>, past participle done) Obsolete spelling of do. 1603, Michel de Montaigne...
Norse duga, whence Danish du. The past tense form is from Middle English <span class="searchmatch">didde</span>, dude, from Old English dyde, *diede, an unexpected development from Proto-Germanic...