forgetyoudaoicibaDictYouDict[forget 词源字典]
forget: [OE] From a formal point of view, forget is exactly what it seems – a combination of for and get. However, this is not the modern English preposition for, but a prefix that in former times was a live building block of the language, denoting negation or exclusion. So here, forget’s Germanic ancestor *fergetan meant literally ‘not get’, hence ‘lose one’s hold on’ and metaphorically ‘lose one’s memory of’.
=> get[forget etymology, forget origin, 英语词源]
forget (v.)youdaoicibaDictYouDict
Old English forgietan "lose the power of recalling to the mind; fail to remember; neglect inadvertently," from for-, used here probably with privative force, "away, amiss, opposite" + gietan "to grasp" (see get). To "un-get," hence "to lose" from the mind. A common Germanic construction (compare Old Saxon fargetan, Old Frisian forjeta, Dutch vergeten, Old High German firgezzan, German vergessen "to forget"). The physical sense would be "to lose (one's) grip on," but that is not recorded in any historical Germanic language. Figurative sense of "lose care for" is from late 13c. Related: Forgetting; forgot; forgotten.