Synonyms of nebulously

2 Syllables
thickly, dully, darkly
3 Syllables
dingily, duskily, gloomily, hazily, vaguely, secretly, covertly
4 Syllables
tenebrously, indistinctly, obscurely
5 Syllables
indefinably
6 Syllables
indecisively, unobtrusively, indefinitely