ULNOPSF

Make words with F

Never: plural or third-person -S

FLOP FLOSS FLUFF FOOL FOUL FOULUP FULL FUSS LOOPFUL LUFF POOF PUFF SLUFF SNUFF SOULFUL SPOOF SPOONFUL SPOONSFUL UNFOUL

Pangrams: SPOONFUL SPOONSFUL

score: 90