Synonyms of clandestine

1 Syllable
t
2 Syllables
hidden, stealthy, cloaked, foxy, stealthiest, hush-hush, covert, sneaky, artful, closet, stealthier
3 Syllables
concealed, deceitful, underground, lubricious, illicit, private, fraudulent, furtive, underhand, nonpublic
4 Syllables
cloak-and-dagger, underhanded, hole-and-corner, huggermugger, undercover, dirty-dealing, surreptitious
5 Syllables
under-the-counter
6 Syllables
illegitimate