From un- + enlightenable. <span class="searchmatch">unenlightenable</span> (comparative more <span class="searchmatch">unenlightenable</span>, superlative most <span class="searchmatch">unenlightenable</span>) Not enlightenable; that cannot be enlightened...
From enlighten + -able. enlightenable (comparative more enlightenable, superlative most enlightenable) That can be enlightened. <span class="searchmatch">unenlightenable</span>...