Adjective at ease has 3 senses
- relaxed, at ease - without strain or anxiety; "gave the impression of being quite relaxed"; "a relaxed and informal discussion"
- easy, at ease - free from worry or anxiety; "knowing that I had done my best, my mind was easy"; "an easy good-natured manner"; "by the time the child faced the actual problem of reading she was familiar and at ease with all the elements words"
- at ease - socially at ease; "was at ease with strangers"
Antonym: uncomfortable (indirect, via comfortable)
,
Adverbial at ease has 1 sense
- at ease, at rest - in a relaxed position, of soldiers; "the soldiers were standing at ease"
,