over- + burdensome. <span class="searchmatch">overburdensome</span> (comparative more <span class="searchmatch">overburdensome</span>, superlative most <span class="searchmatch">overburdensome</span>) Too burdensome. “<span class="searchmatch">overburdensome</span>”, in Webster’s Revised...
exacting, onerous, taxing burdensomely burdensomeness nonburdensome <span class="searchmatch">overburdensome</span> unburdensome burden of or like a burden; arduous or demanding “burdensome”...