<span class="searchmatch">undersignalled</span> simple past and past participle of undersignal...
<span class="searchmatch">undersignalling</span> present participle and gerund of undersignal...
present participle undersignaling or <span class="searchmatch">undersignalling</span>, simple past and past participle undersignaled or <span class="searchmatch">undersignalled</span>) To signal inadequately. Antonym: oversignal...