FRIENDLIEST is a playable word

friendly Scrabble® Dictionary

adjective
friendlier, friendliest
inclined to approve, help, or support
noun
pl. friendlies
one who is friendly
899 Playable Words can be made from "FRIENDLIEST"
   2-Letter Words (20 found)
   3-Letter Words (80 found)
   10-Letter Words (5 found)
   11-Letter Words (1 found)