Antonyms of adj teenage

1 sense of teenage

Sense 1
adolescent, teen, teenage, teenaged -- (being of the age 13 through 19; "teenage mothers"; "the teen years")

INDIRECT (VIA young) -> old -- ((used especially of persons) having lived for a relatively long time or attained a specific age; "his mother is very old"; "a ripe old age"; "how old are you?")

Similarity of adj teenage

1 sense of teenage

Sense 1
adolescent, teen, teenage, teenaged -- (being of the age 13 through 19; "teenage mothers"; "the teen years")
       => young (vs. old), immature -- ((used of living things especially persons) in an early period of life or development or growth; "young people")