Lewis & Short

as-sŏcĭo (ads-), āvi, ātum, 1, v. a., to join to or unite with a person or thing (post-Aug.): cornua summis Adsociant malis, Claud. B. Gild. 482: adsociati principali curae, Dig. 1, tit. 11.
Poet.: mente virens Phoeboque Melampus Associat passus, goes with, Stat. Th. 3, 454 Queck.