Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
jūbĭlo, āvi, ātum, 1, v. n. and a. [jubilum], to shout, to raise a shout of joy: quiritare, jubilare, Varr. L. L. 6, § 68 Müll.: aliquem, to call out to a person: io buccol quis me jubilat? Poet. ib.: jubilate Deo, Vulg. Psa. 99, 4: in conspectu regis Domini, id. ib. 99, 6.