Synonyms of distressingly

2 Syllables
deeply, quite, very, badly
3 Syllables
sorely, gravely, mournfully, movingly, grievously, cumbrously, gruelingly, harmfully
4 Syllables
affectingly, intensely, severely, regrettably, deplorably, acutely, unwieldily, threateningly, menacingly, perilously, precariously, decidedly
5 Syllables
cumbersomely