<span class="searchmatch">outlightened</span> simple past and past participle of outlighten...
<span class="searchmatch">outlightening</span> present participle and gerund of outlighten...
simple present outlightens, present participle <span class="searchmatch">outlightening</span>, simple past and past participle <span class="searchmatch">outlightened</span>) (transitive, poetic) To be more light or bright...