verb: become stiff or stiffer; "He stiffened when he saw his boss enter the room"
verb: make stiff or stiffer; "Stiffen the cream by adding gelatine"
verb: restrict; "Tighten the rules"; "stiffen the regulations"
Length: 7 letters
Scrabble value: 13
Words with Friends value: 14
Literati value: 11
TWL (USA): Found
SOWPODS (UK): Found
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