Comfortable

adj.calm, joyfuleveryday

Meaning 1

Physically at ease, with enough support, space, or relief from strain.

Reach for it when describing bodily ease or an environment that provides it

The adjustable stool kept Ren comfortable throughout the long rehearsal.

everyday
restful
the setting helps the body recover
not when Restful describes the effect, not whether a seat or garment fits well.
warm
cozy
warmth, enclosure, and homelike pleasure are central
not when Cozy is wrong for spacious ergonomic comfort or a cool clinical room.
professional
supportive
physical support or accommodation deserves emphasis
not when Supportive may concern encouragement and need not feel pleasant.

Relaxed and free from awkwardness in a situation or relationship.

Reach for it when describing social or emotional ease rather than furniture or temperature

By the third session, the apprentice felt comfortable asking basic questions.

everyday
at ease
absence of bodily or social tension is what matters
not when This phrase does not name the material conditions that create comfort.
warm
relaxed
tension has dropped in mood or posture
not when A relaxed person may still be physically uncomfortable.
professional
secure
safety and confidence allow openness
not when Security can exist without familiarity or ease.
literary
unselfconscious
the person acts naturally without monitoring every impression
not when It is too specific when comfort comes from trust rather than freedom from embarrassment.

comfortable chair
A comfortable chair made the reading corner usable for longer visits.
feel comfortable
Students should feel comfortable requesting a second explanation.
comfortable silence
A comfortable silence settled over the friends as they worked.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.