Synonyms of unamusing

1 Syllable

hard, tough, deep, fell, grim

2 Syllables

heavy, pressing, urgent, smoking, grievous, grave, major, worrying, strenuous, arduous, ugly

3 Syllables

laborious, important, difficult, severe, fateful, dangerous, far-reaching, sobering, momentous, menacing, threatening, meaningful

4 Syllables

operose, significant, formidable, unhumorous