The Collaborative International Dictionary of English v.0.48:
Forget \For*get"\, v. t. [imp. Forgot(Forgat, Obs.); p. p.
Forgotten, Forgot; p. pr. & vb. n. Forgetting.] [OE.
forgeten, foryeten, AS. forgietan, forgitan; pref. for- +
gietan, gitan (only in comp.), to get; cf. D. vergeten, G.
vergessen, Sw. f["o]rg[aum]ta, Dan. forgiette. See For-,
and Get, v. t.]
1. To lose the remembrance of; to let go from the memory; to
cease to have in mind; not to think of; also, to lose the
power of; to cease from doing.
Bless the Lord, O my soul, and forget not all his
benefits. --Ps. ciii. 2.
Let my right hand forget her cunning. --Ps. cxxxvii.
Hath thy knee forget to bow? --Shak.
2. To treat with inattention or disregard; to slight; to
Can a woman forget her sucking child? . . . Yes,
they may forget, yet will I not forget thee. --Is.
To forget one's self.
(a) To become unmindful of one's own personality; to be
lost in thought.
(b) To be entirely unselfish.
(c) To be guilty of what is unworthy of one; to lose one's
dignity, temper, or self-control.