derigeo
Could not find derigendusque in Logeion dictionaries.
derigendusque Verb: present passive gerundive singular of derigeo
dē-rĭgeo, ēre,
- v. a., to remove hardness, to soften, Commod. 73, 8.
dē-rigeo, ēre, das Starre (Harte) benehmen, blandus sermo deriget, Commodian. instr. 2, 30, 8.
dērĭgĕō (dīr-), ēre, intr., Gloss. être glacé.