▪ prevent (something) from being known; keep secret:"they were at great pains to conceal that information from the public"Similarhidecover updisguisedissemblemaskveilkeep secretkeep quiet aboutkeep darkhush updraw a veil oversweep under the carpetgloss oversuppressrepressbottle upburyinformal:keep a/the lid onkeep under one's hatOppositeshowdiscloseconfess
Word OriginMiddle English: from Old French conceler, from Latin concelare, from con- ‘completely’ + celare ‘hide’.