From <span class="searchmatch">perturbing</span> + -ly. <span class="searchmatch">perturbingly</span> (comparative more <span class="searchmatch">perturbingly</span>, superlative most <span class="searchmatch">perturbingly</span>) In a manner that perturbs. 1978, Peter H Sutcliffe...
-ly. dismayingly (comparative more dismayingly, superlative most dismayingly) In a manner that causes dismay. distressingly disturbingly <span class="searchmatch">perturbingly</span>...
collection of gargantuan gasbags (dirigibles, non-round balloons, and <span class="searchmatch">perturbingly</span> plump politicians of a bloviative bent)—an artillery spotting balloon...