11 letters · 20 points in Scrabble
adjective providing or experiencing physical well-being or relief (`comfy' is informal)
adjective free from stress or conducive to mental ease; having or affording peace of mind
adjective more than adequate
originFrom Middle English comfortable, from Old French confortable, from conforter. By surface analysis, comfort + -able.
Etymology from Wiktionary, CC BY-SA 3.0