Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dīreptĭo, ōnis, f. [diripio], a plundering, pillaging (rare, but good prose): urbs relicta direptioni et incendiis, Cic. Fam. 4, 1, 2; cf. urbis, id. Verr. 2, 4, 52; * Caes. B. C. 2, 12: oppidi (with expugnatio), Suet. Claud. 21: profanorum sacrorumque, Quint. 8, 3, 69: sociorum (with vexatio), Cic. Cat. 1, 7, 18.
In plur., Cic. Fam. 4, 13, 2; Liv. 44, 1 fin.