assessable (adj.)youdaoicibaDictYouDict[assessable 词源字典]
mid-15c., from assess + -able.[assessable etymology, assessable origin, 英语词源]
assessment (n.)youdaoicibaDictYouDict
1540s, "value of property for tax purposes," from assess + -ment. Meaning "determination or adjustment of tax rate" is from 1540s; general sense of "estimation" is recorded from 1620s. In education jargon from 1956.
assessor (n.)youdaoicibaDictYouDict
late 14c., from Old French assessor "assistant judge, assessor (in court)" (12c., Modern French assesseur) and directly from Latin assessor "an assistant, aid; an assistant judge," in Late Latin "one who assesses taxes," literally "a sitter-by," agent noun from past participle stem of assidere "to sit beside" (see assess).
asset (n.)youdaoicibaDictYouDict
see assets.
assets (n.)youdaoicibaDictYouDict
1530s, "sufficient estate," from Anglo-French asetz (singular), from Old French assez (11c.) "sufficiency, satisfaction; compensation," noun use of adverb meaning "enough, sufficiently; very much, a great deal," from Vulgar Latin *ad satis "to sufficiency," from Latin ad- "to" (see ad-) + satis "enough" (see sad).

Beginning as a legal term, "sufficient estate" (to satisfy debts and legacies), it passed into general use; meaning "any property that theoretically can be converted to ready money" is from 1580s. Asset is a 19c. artificial singular. Asset stripping attested from 1972.
asseverate (v.)youdaoicibaDictYouDict
1791, from Latin asseveratus, past participle of asseverare "to affirm, insist on, maintain," from ad- "to" (see ad-) + severus "serious, severe" (see severe). Related: Asseverated; asseverating.
asseveration (n.)youdaoicibaDictYouDict
1550s, from Latin asseverationem (nominative asseveratio) "vehement assertion, protestation," noun of action from past participle stem of asseverare (see asseverate).
asshole (n.)youdaoicibaDictYouDict
variant of arsehole (also see ass (n.2)). Meaning "contemptible person," mid-1930s.
assiduity (n.)youdaoicibaDictYouDict
early 15c., from Latin assiduatem "continual presence," noun of quality from past participle stem of assiduus (see assiduous).
assiduous (adj.)youdaoicibaDictYouDict
1530s, from Latin assiduus "attending; continually present, incessant; busy; constant," from assidere "to sit down to" (thus "be constantly occupied" at one's work); from ad "to" (see ad-) + sedere "to sit" (see sedentary). The word acquired a taint of "servility" in 18c. Related: Assiduously; assiduousness.
assiento (n.)youdaoicibaDictYouDict
1714, "contract between the King of Spain and another power" (especially that made at the Peace of Utrecht, 1713, with Great Britain for furnishing African slaves to the Spanish colonies in the Americas), from Spanish asiento, from asentar "to adjust, settle, establish," literally "to place on a chair," from a sentar, from Latin sedens, present participle of sedere "to sit" (see sedentary).
assign (v.)youdaoicibaDictYouDict
c. 1300, from Old French assiginer (13c.) "assign, set (a date, etc.); appoint legally; allot," from Latin assignare "to mark out, to allot by sign, assign, award," from ad- "to" (see ad-) + signare "make a sign," from signum "mark" (see sign). Main original use was in English law, in transferences of personal property. General meaning "to fix, settle, determine, appoint" is from c. 1300. Related: Assigned; assigning.
assignation (n.)youdaoicibaDictYouDict
early 14c., "appointment by authority," from Old French assignacion (14c., Modern French assignation), from Latin assignationem (nominative assignatio) "an assigning, allotment," noun of action from past participle stem of assignare (see assign). Meaning "action of legally transfering" (a right or property) is from 1570s; that of "a meeting by arrangement, tryst" is from 1650s.
assignee (n.)youdaoicibaDictYouDict
early 15c., "one who is appointed to act for another," from Old French assigne, past participle of assignier (see assign).
assignment (n.)youdaoicibaDictYouDict
late 14c., "order, request, directive," from Old French assignement "(legal) assignment (of dower, etc.)," from Late Latin assignamentum, noun of action from Latin assignare (see assign). Meaning "appointment to office" is mid-15c.; that of "a task assigned" (to someone) is from c. 1848.
assimilate (v.)youdaoicibaDictYouDict
early 15c., from Latin assimilatus "feigned, pretended, fictitious," past participle of assimilare "to make like," from ad- "to" (see ad-) + simulare "make similar," from similis "like, resembling" (see similar). Originally transitive (with to); intransitive use first recorded 1837. Related: Assimilated; assimilating.
assimilation (n.)youdaoicibaDictYouDict
early 15c., "act of assimilating," from Old French assimilacion, from Latin assimilationem (nominative assimilatio) "likeness, similarity," noun of action from past participle stem of assimilare (see assimilate). Psychological sense is from 1855.
assimilationist (n.)youdaoicibaDictYouDict
"one who advocates racial or ethnic integration," 1900, in reference to possible U.S. attitudes toward Hawaii and possessions obtained in the war against Spain; usually with reference to Jews in European nations; see assimilation + -ist.
assist (v.)youdaoicibaDictYouDict
early 15c., from Middle French assister "to stand by, help, put, place, assist" (14c.), from Latin assistere "stand by, take a stand near, attend," from ad- "to" (see ad-) + sistere "stand still, take a stand; to set, place, cause to stand," from PIE *si-st-, reduplicated form of root *sta- "to stand" (see stet). Related: Assisted; assisting. Medical assisted suicide attested from 1884.
assist (n.)youdaoicibaDictYouDict
1570s, "an act of assistance," from assist (v.). In the sporting sense attested 1877 in baseball, 1925 in ice hockey.