approachable (adj.)youdaoicibaDictYouDict[approachable 词源字典]
1570s, from approach (v.) + -able. Figurative sense, "affable, friendly," is from 1610s. Related: Approachably; approachability. [approachable etymology, approachable origin, 英语词源]
approbate (v.)youdaoicibaDictYouDict
late 15c., from Latin approbatus, past participle of approbare "to assent to (as good), favor" (see approve). Related: Approbated; approbating.
approbation (n.)youdaoicibaDictYouDict
late 14c., "proven effectiveness, excellence," from Old French aprobacion or directly from Latin approbationem (nominative approbatio) "an approval," noun of action from past participle stem of approbare (see approve). Meaning "approval, endorsement" is from early 15c.
appropre (v.)youdaoicibaDictYouDict
mid-14c., from Old French aproprier, from Late Latin appropriare (see appropriate (v.)).
appropriate (v.)youdaoicibaDictYouDict
early 15c., "take possession of," from Late Latin appropriatus, past participle of appropriare, adpropriare (c.450) "to make one's own," from Latin ad- "to" (see ad-) + propriare "take as one's own," from proprius "one's own" (see proper). Related: Appropriated; appropriating.
appropriate (adj.)youdaoicibaDictYouDict
"specially suitable, proper," early 15c., from Latin appropriatus, past participle of appropriare (see appropriate (v.)). Related: Appropriately; appropriateness.
appropriation (n.)youdaoicibaDictYouDict
late 14c., "taking (something) as private property," from Late Latin appropriationem (nominative appropriatio) "a making one's own," noun of action from past participle stem of appropriare (see appropriate). Meaning "setting aside for some purpose" (especially of money) first attested 1789 in U.S. Constitution.
approval (n.)youdaoicibaDictYouDict
1680s, from approve + -al (2). According to OED, "Rare bef. 1800; now generally used instead of" approvance (1590s, from French aprovance).
approve (v.)youdaoicibaDictYouDict
c. 1300, "to demonstrate, prove;" mid-14c., "to attest (something) with authority," from Old French aprover (Modern French approuver) "approve, agree to," from Latin approbare "to assent to as good, regard as good," from ad- "to" (see ad-) + probare "to try, test something (to find if it is good)," from probus "honest, genuine" (see prove).

The meaning extended late 14c. to "to sanction, endorse, confirm formally" then to "assent to (something) as good" (early 15c.), especially in reference to the actions of authorities, parliaments, etc. Related: Approved; approving.
approximate (adj.)youdaoicibaDictYouDict
early 15c., from Latin approximatus, past participle of approximare "to come near to," from ad- "to" (see ad-) + proximare "come near," from proximus "nearest," superlative of prope "near" (see propinquity).
approximate (v.)youdaoicibaDictYouDict
early 15c., "to bring or put close," from approximate (adj.). Meaning "to come close" is from 1789. Related: Approximated; approximating.
approximately (adv.)youdaoicibaDictYouDict
1742, from approximate (adj.) + -ly (2).
approximation (n.)youdaoicibaDictYouDict
early 15c., "act of coming near or close," noun of action from approximate (v.). Meaning "result of approximating" is from 1650s.
appurtenance (n.)youdaoicibaDictYouDict
c. 1300, "right, privilege or possession subsidiary to a principal one," from Anglo-French apurtenance (12c.), Old French apartenance, present participle of apartenir "be related to," from Latin appertinere "to pertain to," from ad- "to" (see ad-) + pertinere "belong to" (see pertain).
appurtenances (n.)youdaoicibaDictYouDict
"apparatus, gear," late 14c.; see appurtenance.
appurtenant (adj.)youdaoicibaDictYouDict
late 14c., from Anglo-French apurtenant, Old French apartenant, present participle of apartenir "be related to" (see appurtenance).
apraxia (n.)youdaoicibaDictYouDict
1877, medical Latin, from German apraxie (H. Steinthal, 1871), from Greek apraxia "inaction," from privative prefix a- (see a- (3)) + praxis "a doing, action, business" (see praxis) + abstract noun ending -ia.
apricate (v.)youdaoicibaDictYouDict
1690s, "to bask in the sun," from Latin apricatus, past participle of apricari "to bask in the sun," from apricus "exposed" (to the sun); perhaps contracted from *apericus, from aperire "to open" (see overt). Transitive sense is recorded from 1851.
apricot (n.)youdaoicibaDictYouDict
1550s, abrecock, from Catalan abercoc, related to Portuguese albricoque, from Arabic al-birquq, through Byzantine Greek berikokkia from Latin (malum) praecoquum "early-ripening (fruit)" (see precocious). Form assimilated to French abricot.
Latin praecoquis early-ripe, can probably be attributed to the fact that the fruit was considered a variety of peach that ripened sooner than other peaches .... [Barnhart]
The older Latin name for it was prunum Armeniacum or malum Armeniacum, in reference to supposed origin in Armenia. As a color name, first attested 1906.
AprilyoudaoicibaDictYouDict
fourth month, c. 1300, aueril, from Old French avril (11c.), from Latin (mensis) Aprilis, second month of the ancient Roman calendar, of uncertain origin, perhaps based on Apru, an Etruscan borrowing of Greek Aphrodite. Or perhaps *ap(e)rilis "the following, the next," from its place as the second month of the old Roman calendar, from Proto-Italic *ap(e)ro-, from PIE *apo- "away, off" (see apo-; compare Sanskrit aparah "second," Gothic afar "after"). With month-name suffix -ilis as in Quintilis, Sextilis (the old names of July and August). In English in Latin form from mid-12c. Replaced Old English Eastermonað, which was named for a fertility goddess (see Easter). Re-spelled in Middle English on Latin model (apprile first attested late 14c.).