1. Kept secret
   "the plan was kept carefully under wraps"

See also: covert

• fustic
• fustigate
• fustigation
• fustily
• fusty
• futhark
• futhorc
• futhork
• futile
• futilely
• futility
• futon
• futtock
• futtock shroud
• future
• future date
• future day
• future perfect
• future perfect tense
• future progressive
• future progressive tense
• future tense
• futureless
• futures contract
• futures exchange