RENNIN is a playable word

rennin Scrabble® Dictionary

noun
pl. rennins
an enzyme
16 Playable Words can be made from "RENNIN"
   2-Letter Words (5 found)
   3-Letter Words (5 found)
   4-Letter Words (2 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)