Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
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.