Comfortable means pleasant for your body, like a soft big armchair. A comfortable chair, comfortable shoes, make yourself comfortable.
It also describes situations and feelings: comfortable with the decision, a comfortable majority, comfortably off — which is a delicate British way of saying reasonably wealthy. In hospital reporting, comfortable is a formal condition description meaning stable and not in distress. Note comfortably; and that the pronunciation collapses to three syllables in ordinary speech, which surprises learners.
1adjectivecomfortablePleasant for your body.
“These shoes are so comfortable that I can walk in them all day.”
2adjectivefreeFree of worry or difficulty.
“They're not rich, but they live a comfortable life.”
Too few real examples of this word to estimate which sense is commonest.
comfortable is a quality of ease.
Also accepted in games: comfy
Old French confortable comes from conforter, to strengthen, from Latin fortis, strong. Comfort originally meant strengthening rather than softness, and a comforter was somebody who gave you courage.
Old French
confortable
Middle English
comfortable
English, today
comfortable
From Middle English comfortable, from Old French confortable, from conforter. by surface analysis, comfort + -able.
Etymology from Wiktionary, CC BY-SA