deputyyoudaoicibaDictYouDict[deputy 词源字典]
deputy: [16] A deputy is literally ‘someone who has been deputed to act on someone else’s behalf’. It represents a reformulation of the Middle English noun depute. This was borrowed from the past participle of Old French deputer (source of the English verb depute [15] and hence of deputation [16]), which in turn came from late Latin dēputāre ‘assign, allot’.

In classical times this meant literally ‘cut off’ (it was a compound verb formed from the prefix dē- ‘off’ and putāre, which meant ‘cut’ – as in amputate – as well as ‘esteem, consider, reckon, think’ – as in compute, dispute, impute, and repute).
=> amputate, compute, count, dispute, impute, putative, repute[deputy etymology, deputy origin, 英语词源]
deputy (n.)youdaoicibaDictYouDict
c. 1400, "one given the full power of an officer without holding the office," from Anglo-French deputé, noun use of past participle of Middle French députer "appoint, assign" (14c.), from Late Latin deputare "to destine, allot," in classical Latin "to esteem, consider, consider as," literally "to cut off, prune," from de- "away" (see de-) + putare "to think, count, consider," literally "to cut, prune" (see pave).