The antonym of ‘Disclose’ is-
সঠিক উত্তর
Conceal
The phrase ‘sine die means
Disclose (VERB):
Meaning: Make (secret or new information) known.
Synonym:
reveal, make known, divulge, tell, impart, communicate, pass on, vouchsafe, unfold, release, make public, broadcast, publish, report, unveil
Antonym:
conceal, hide.
Source: Oxford Dictionary