Synonyms of threateningly
- 2 Syllables
- quite, very, badly
- 3 Syllables
- sorely, gravely, grievously, malignly, fiercely, harmfully
- 4 Syllables
- distressingly, intensely, severely, regrettably, deplorably, acutely, frighteningly, tigerishly, menacingly, perilously, precariously, decidedly
- 5 Syllables
- maleficiently