Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
istīus-mŏdi (also separately istīus mŏdi, istīmŏdi, Plaut. Truc. 5, 38), of that kind, such: istius modi amicos, Plaut. Ep. 1, 2, 16: istius modi clientes, id. Most. 3, 2, 59: cum istius modi virtutibus, id. Rud. 2, 2, 15: vos esse istius modi, Ter. Heaut. 2, 4, 7: istiusmodi ratio, Cic. Verr. 1, 11, 33: nihil istiusmodi, id. ib. 2, 4, 5, § 9.