Adonis/əˈdəʊnɪs/ Definition 1 of 2Pro Tip 1/3Greek Mythology Originates from Greek myth; Adonis was Aphrodite's beautiful lover. He fancied himself an Adonis, expecting adoration from everyone. Pro Tip 2/3Informal Compliment Often used informally to praise someone's physical attractiveness. After his makeover, he walked in looking like an Adonis. Pro Tip 3/3Might Sound Exaggerated Can sound over the top if used for someone who isn't exceptionally handsome. Calling him an Adonis is a bit much; he's just cute.