Толковый словарь английского языка Oxford English Reference - understand

v. (past and past part. -stood) 1 tr. perceive the meaning of (words, a person, a language, etc.) (does not understand what you say; understood you perfectly; cannot understand French). 2 tr. perceive the significance or explanation or cause of (do not understand why he came; could not understand what the noise was about; do not understand the point of his remark). 3 tr. be sympathetically aware of the character or nature of, know how to deal with (quite understand your difficulty; cannot understand him at all; could never understand algebra). 4 tr. a (often foll. by that + clause) infer esp. from information received, take as implied, take for granted (I understand that it begins at noon; I understand him to be a distant relation; am I to understand that you refuse?). b (absol.) believe or assume from knowledge or inference (he is coming tomorrow, I understand). 5 tr. supply (a word) mentally (the verb may be either expressed or understood). 6 intr. have understanding (in general or in particular). Phrases and idioms understand each other 1 know each other's views or feelings. 2 be in agreement or collusion. Derivatives understandable adj. understandably adv. understander n. Etymology: OE understandan (as UNDER-, STAND)