INBUILT is a playable word

inbuilt Scrabble® Dictionary

adjective
forming an integral part of a structure
41 Playable Words can be made from "INBUILT"
   2-Letter Words (8 found)
   3-Letter Words (19 found)
   4-Letter Words (7 found)
   5-Letter Words (6 found)
   7-Letter Words (1 found)