After four or five months of casual interaction, they realized they both had lost a young parent to cancer.
Oh, the heaven and hell wrought by the casual use of a pronoun. He was not a man given to casual affectionate display; the moment was charged with emotion.
We cannot expect to have a casual relationship with heritage. Every day I meet men who tell the most wonderful stories in the most casual way.
His large voice was modulated to kindliness as he spoke in a casual manner. It came in a most casual voice, despite the dancing delight in her face. Kingozi's attention, however, now narrowed to a smaller circle than the casual.
But in her the action was so casualso absent, that it did not affect me disagreeably. Of persons, in the sense of "not to be depended on, unmethodical," it is attested from ; meaning "showing lack of interest" is from Of clothes, "informal," from Synonyms Examples Word Origin.