un divulged (adjective) ulterior: secret; pertaining to a hidden goal
Sinonime: ambiguous, buried,
concealed,
covert,
cryptic,
dark,
enigmatic,
equivocal,
guarded,
hidden,
implied,
obscure, obscured,
personal,
privy,
remote,
secondary,
selfish, shrouded, under cover, under wraps, undisclosed, undivulged, unexpressed, unsaid
Antonime: expressed,
known,
overt,
public