Not

Part of speech: noun (n.)

Wot not; know not; knows not. [Obs.] Chaucer.

Part of speech: adjective (a.)

Shorn; shaven. [Obs.] See Nott.

Part of speech: adverb (adv.)

A word used to express negation, prohibition, denial, or refusal. Not one word spake he more than was need. Chaucer. Thou shalt not steal. Ex. xx. 15. Thine eyes are upon me, and I am not. Job vii. 8. The question is, may I do it, or may I not do it Bp. Sanderson. Not . . . but, or Not but, only. [Obs. or Colloq.] Chaucer.