Synonyms of unforthcoming

1 Syllable
shy, mum
2 Syllables
silent, withdrawn, dried-up, bashful, close, uptight
3 Syllables
tightlipped, reserved, hesitant, reticent, taciturn, tight-lipped, unspeaking, restrained
4 Syllables
secretive, unsociable, close-mouthed, closelipped
5 Syllables
unexpressive
7 Syllables
uncommunicative, incommunicative