blessedly, thankfully, sadly, inexplicably, curiously, drearily, torturously, embarrassingly, lamentably, unforgivably, frustratingly, strangely, disappointingly, oddly, predictably, painfully, gloriously, annoyingly, yawningly, miraculously, dreadfully, cloyingly, wretchedly, depressingly, fittingly, blissfully, insufferably, unaccountably, seemingly, excruciatingly, comically, interminably, regrettably, albeit, practically, overfamiliar, unspeakably, shockingly, fortunately, mortifyingly, horribly, cruelly, forgivingly, lugubriously, pathetically, maddeningly, raggedly, pitifully, forgivably, mawkishly, disastrously, agonizingly, memorably, laughably, bewilderingly, unfortunately, infinitesimally, irritatingly, unbecomingly, inexcusably, amusingly, amazingly, bloodlessly, unhappily, stickily, unremarkably, satisfyingly, distressingly, chucklesome, shamefully, drably, remarkably, boringly, absurdly, scarcely, mysteriously, unbearably, surprisingly, bizarrely, finally, surely, admittedly, conspicuously, immortally, apocalyptically, bloviation, lingeringly, utterly, horridly, disgustingly, seemly, uncharacteristically, farcically, tellingly, sordidly, disappointedly, completely, queasily, insipidly, momentarily, transcendently, piteously

coup de grace, deathblow

showing mercy, with mercy