Synonyms of clandestine in English:

clandestine


See US English definition of clandestine

See UK English definition of clandestine

See Spanish definition of clandestino

adjective

1‘their clandestine meetings’

SYNONYMS
secret, covert, furtive, surreptitious, stealthy, cloak-and-dagger, hole-and-corner, hole-in-the-corner, closet, behind-the-scenes, backstairs, back-alley, under-the-table, hugger-mugger, concealed, hidden, private
sly, sneaky, underhand
undercover, underground
black
informal hush-hush
ANTONYMS

open, above board