Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dē-jungo, ĕre, v. a., to unyoke cattle: IVNCTO DEIVNCTOVE IVMENTO, Inscr. ap. Grut. 1003, 2.
Part. perf., dejunctum, dub. reading for dijunctum, Varr. L. L. 10, 3, § 45 Müll.