† ˈdevilnessObs.rare. [f. devil n. + -ness.] A thing diabolical or of demonic character, a demon: = devilry 1. a1300E. E. Psalter xcv. 5 For alle goddes of genge develnesses ere þa.a1448Note in R. Glouc.Chron. (MS.Coll. Arms) (1724) 415 The monekes toke holywater, and drof a way the maner deuelnesse.