become stiff or stiffer; "He stiffened when he saw his boss enter the room"; make stiff or stiffer; "Stiffen the cream by adding gelatine"; restrict; "Tighten the rules"; "stiffen the regulations"
Anagrams of stiffen
INFEFTS
STEFFIN
Frequently asked questions for stiffen:
How many solutions are there for the crossword clue "STIFFEN"?
There are 75 solutions. The longest is REINVIGORATE with 12 letters, and the shortest is GEL with 3 letters.
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