1. Secretly and carefully planned
   "deep-laid plans"

See also: planned

• unsupported
• unsupportive
• unsuppressed
• unsure
• unsurmountable
• unsurpassable
• unsurpassed
• unsurprised
• unsurprising
• unsusceptibility
• unsusceptible
• unsuspected
• unsuspecting
• unsuspectingly
• unsuspicious
• unsustainable
• unswayed
• unsweet
• unsweetened
• unswept
• unswerving
• unswervingly
• unsworn
• unsyllabic
• unsyllabled