Appearing gentle or kind; looking as if one is kind (used to express an impression, not certainty).
彼女は優しげな笑顔で子どもに話しかけた。
She spoke to the child with a gentle-looking smile.
その先生は声が低く、優しげな雰囲気がある。
That teacher has a low voice and gives off a gentle impression.
彼の言葉は優しげだが、本当の気持ちはわからない。
His words sound kind, but you can't tell what he really feels.