RIGIDIFICATION Scrabble 21 Words With Friends 24 Scrabble letter values: R1I1G2I1D2I1F4I1C3A1T1I1O1N1 = 21 Definition noun the process of becoming stiff or rigid. — synonyms: stiffening, rigidifying See all 533 words you can make from RIGIDIFICATION → 14-letter words Words starting with R Words ending with N ← Unscramble different letters