Synonyms of cloak-and-dagger

1 Syllable
sly, quiet
2 Syllables
hamer, secret, hammier, stealthy, stagy, hammy, hush-hush, covert, sneaky
3 Syllables
cliff-hanging, cliffhanging, mysterious, intriguing
4 Syllables
blood-and-thunder, huggermugger, undercover, clandestine, surreptitious, hugger-mugger
5 Syllables
overdramatic, melodramatic
6 Syllables
overemotional