Artificial intelligent assistant

dreff

I. dref, a. Obs. rare.
    [early ME.:—OE. *dréfe (:—drôƀjo-), secondary form of dróf (:—drôƀu-): see drof, and cf. OHG. truobi, Ger. trübe.]
    Troublesome, vexatious, grievous.

c 1250 Gen. & Ex. 4144 Ydolatrie, ðat was hem lef, ofte vt-wroȝte hem sorȝes dref.

II. dref(f
    obs. pa. tense and pple. of drive v.

Oxford English Dictionary

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