ig·nore / igˈnôr/ • v. [tr.] refuse to take notice of or acknowledge; disregard intentionally: he ignored her outraged question. ∎ fail to consider (something significant): direct satellite broadcasting ignores national boundaries. ∎ Law (of a grand jury) reject (an indictment) as groundless.DERIVATIVES: ig·nor·a·ble adj.ig·nor·er n.ORIGIN: late 15th cent. (in the sense ‘be ignorant of’): from French ignorer or Latin ignorare ‘not know, ignore,’ from in- ‘not’ + gno-, a base meaning ‘know.’ Current senses date from the early 19th cent.