1. Lying down; in a position of comfort or rest
   - accumbent, recumbent

See also: unerect

• unflappable
• unflattering
• unflavored
• unflavoured
• unflawed
• unfledged
• unflinching
• unflinchingly
• unfluctuating
• unflurried
• unflustered
• unfocused
• unfocussed
• unfold
• unfolding
• unforbearing
• unforced
• unforceful
• unforeseeable
• unforeseen
• unforesightful
• unforested
• unforethoughtful
• unforfeitable
• unforgettable