apprehendyoudaoicibaDictYouDict[apprehend 词源字典]
apprehend: [14] The underlying notion in apprehend is of ‘seizing’ or ‘grasping’; it comes ultimately from the Latin verb prehendere ‘seize’ (source also of comprehend, predatory, and prehensile). Latin apprehendere ‘lay hold of’, formed with the prefix ad-, developed the metaphorical meaning ‘seize with the mind’ – that is, ‘learn’; and that was the earliest meaning apprehend had in English when it was borrowed either directly from Latin or via French appréhender: John de Trevisa, for instance, in his translation of De proprietatibus rerum 1398 writes ‘he holds in mind … without forgetting, all that he apprehends’.

More familiar modern senses, such as ‘arrest’ and ‘understand’, followed in the 16th century. A contracted form of the Latin verb, apprendere, became Old French aprendre, modern French apprendre ‘learn’. This provided the basis for the derivative aprentis ‘someone learning’, from which English gets apprentice [14]; and its past participle appris, in the causative sense ‘taught’, was the source of English apprise [17].

The chief modern meaning of the derived noun apprehension, ‘fear’, arose via the notion of ‘grasping something with the mind’, then ‘forming an idea of what will happen in the future’, and finally ‘anticipation of something unpleasant’.

=> apprentice, comprehend, impregnable, predatory, prehensile[apprehend etymology, apprehend origin, 英语词源]
apprehend (v.)youdaoicibaDictYouDict
mid-14c., "to grasp in the senses or mind," from Old French aprendre (12c.) "teach; learn; take, grasp; acquire," or directly from Latin apprehendere "to take hold of, grasp," from ad- "to" + prehendere "to seize" (see prehensile). Metaphoric extension to "seize with the mind" took place in Latin, and was the sole sense of cognate Old French aprendre (Modern French apprendre "to learn, to be informed about;" also compare apprentice). Original sense returned in English in meaning "to seize in the name of the law, arrest," recorded from 1540s, which use probably was taken directly from Latin. Related: Apprehended; apprehending.
apprehensible (adj.)youdaoicibaDictYouDict
late 15c., from Latin apprehensibilis "that can be seized," from apprehens-, past participle stem of apprehendere (see apprehend).
apprehension (n.)youdaoicibaDictYouDict
"perception, comprehension," late 14c., from Old French apprehension or directly from Latin apprehensionem (nominative apprehensio), noun of action from past participle stem of apprehendere (see apprehend). Sense of "seizure on behalf of authority" is 1570s; that of "anticipation" (usually with dread) is recorded from c. 1600.
apprehensive (adj.)youdaoicibaDictYouDict
late 14c., "capable of perceiving, fitted for mental impression," from Medieval Latin apprehensivus, from Latin apprehensus, past participle of apprehendere (see apprehend). Meaning "fearful of what is to come" is recorded from 1718, via notion of "capable of grasping with the mind" (c. 1600). Related: Apprehensively; apprehensiveness.
apprentice (n.)youdaoicibaDictYouDict
c. 1300, from Old French aprentiz "someone learning" (13c., Modern French apprenti, taking the older form as a plural), also as an adjective, "unskilled, inexperienced," from aprendre (Modern French apprendre) "to learn; to teach," contracted from Latin apprehendere (see apprehend). Shortened form prentice long was more usual in English.
apprise (v.)youdaoicibaDictYouDict
"to notify," 1690s, from French appris, past participle of apprendre "to inform, teach," literally "to lay hold of (in the mind)," another metaphoric meaning of Latin apprehendere (see apprehend). Related: Apprised; apprising.