Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
in-consīdĕrans, tis, adj., inconsiderate (late Lat.): inconsiderantissime Marcion, Tert. adv. Marc. 2, 29 fin.
Adv.: in-consīdĕranter, inconsiderately: tutor, qui inconsideranter pupillum abstinuit hereditate, Dig. 26, 10, 3, § 17; Hier. p. 108, n. 20.