Phocabulary - clandestine - Synonym: artful, cloak-and-dagger, closet, concealed, covert, foxy, fraudulent, furtive, hidden, hush-hush, illegitimate, illicit, in holes and corners, on the Q. T., on the quiet, private, sneaky, stealthy, surreptitious, under wraps, under-the-counter, undercover, underground, underhand - Antonym: aboveboard, forthright, open, truthful - Photo Word of the Day to improve and enhance word memory. Beginner, intermediate, advanced words including definition, synonyms, and antonyms.