From huper and the base of akmen; beyond the "acme", i.e. Figuratively (of a daughter) past the bloom (prime) of youth -- + pass the flower of (her) age.
KJV: But if any man think that he behaveth himself uncomely toward his virgin, if she pass the flower of her age, and need so require, let him do what he will, he sinneth not: let them marry.
NASB: But if any man thinks that he is acting unbecomingly toward his virgin daughter, if she is past her youth, and if it must be so, let him do what he wishes, he does not sin; let her marry.