Etymology
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postulate (n.)

1580s, "a request, demand, petition," from Latin postulātum "demand, request," properly "that which is requested," noun use of neuter past participle of postulare "to ask, demand; claim; require" (see postulate (v.)).

The sense in logic, "proposition proposed for acceptance without proof, something taken for granted," is from 1640s, from a sense in Medieval Latin. The meaning "self-evident practical proposition" is by 1751. The earlier noun in English was postulation "a petition, request" (c. 1400). Middle English also had postulate (adj.) "nominated to a bishopric or archbishopric" (mid-15c.).

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petition (n.)

mid-14c., petiocioun, "a supplication or prayer," especially to a deity," from Anglo-French (early 14c.), from Old French peticion "request, petition" (12c., Modern French pétition) and directly from Latin petitionem (nominative petitio) "a blow, thrust, attack, aim; a seeking, searching," in law "a claim, suit," noun of action from past-participle stem of petere "to make for, go to; attack, assail; seek, strive after; ask for, beg, beseech, request; fetch; derive; demand, require," from PIE root *pet- "to rush; to fly."

Meaning "formal written request to a superior (earthly)" is attested from early 15c. In law, "a written application for an order of the court" (1737).

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entitle (v.)
also intitle, late 14c., "to give a title to a chapter, book, etc.," from Anglo-French entitler, Old French entiteler "entitle, call" (Modern French intituler), from Late Latin intitulare "give a title or name to," from in- "in" (from PIE root *en "in") + titulus "title" (see title (n.)).

Meaning "to bestow (on a person) a rank or office" is mid-15c. Sense of "to give (someone) 'title' to an estate or property," hence to give that person a claim to possession or privilege, is mid-15c.; this now is used mostly in reference to circumstances and actions. Related: Entitled; entitling.
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endorse (v.)

c. 1400, endosse "confirm or approve" (a charter, bill, etc.), originally by signing or writing on the back of the document, from Old French endosser (12c.), literally "to put on the back," from en- "put on" (see en- (1)) + dos "back," from Latin dossum, variant of dorsum "back" (see dorsal). Assimilated 16c. in form to Medieval Latin indorsare. Figurative sense of "confirm, approve" is recorded in English first in 1847. Related: Endorsed; endorsing.

You can endorse, literally, a cheque or other papers, &, metaphorically, a claim or argument, but to talk of endorsing material things other than papers is a solecism. [Fowler]
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allege (v.)
c. 1300, "make a formal declaration in court;" mid-14c., "pronounce positively, claim as true," with or without proof; it has the form of one French verb and the meaning of another. The form is Anglo-French aleger, Old French eslegier "to clear at law" (from a compound of Latin ex "out of;" see ex- + litigare "bring suit" (see litigation).

However eslegier meant "acquit, clear of charges in a lawsuit," and the Middle English word somehow acquired the meaning of French alléguer, from Latin allegare/adlegare "send for, bring forth, name, produce in evidence, send on business," from ad "to" (see ad-) + legare "to depute, send" (see legate). Related: Alleged; alleging.
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revenge (v.)

late 14c., revengen, "avenge oneself," from Old French revengier, revenger, variants of revenchier "take revenge, avenge" (13c., Modern French revancher), from re-, here perhaps an intensive prefix (see re-), + vengier "take revenge," from Latin vindicare "to lay claim to, avenge, punish" (see vindication). Transitive sense of "take vengeance on account of" is from early 15c. Related: Revenged; revenging; revengement.

To avenge is "to get revenge" or "to take vengeance"; it suggests the administration of just punishment for a criminal or immoral act. Revenge seems to stress the idea of retaliation a bit more strongly and implies real hatred as its motivation. ["The Columbia Guide to Standard American English," 1993]
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extradition (n.)

1833, from French extradition (18c.), apparently a coinage of Voltaire's, from Latin ex "out" (see ex-) + traditionem (nominative traditio) "a delivering up, handing over," noun of action from tradere "to hand over" (see tradition).

This word might be adopted in our language with advantage, as we have none which conveys the same meaning. Extradition signifies the delivering up of criminals who may have sought refuge in any country, to the government whose subjects they are, on a claim being made to this effect. [from a footnote to the word extradition in the translation of "Memoirs of Marshal Ney" published in London in 1833]
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braggart (n.)

"a boaster," 1570s, formerly also braggard, from French bragard (16c.), with pejorative ending (see -ard) + braguer "to flaunt, brag," perhaps originally "to show off clothes, especially breeches," from brague "breeches" (see bracket (n.)). There may be an element of codpiece-flaunting in all this.

Also as an adjective, "vain, boastful" (1610s). The word in English has been at least influenced by brag (v.), even if, as some claim, it is unrelated to it. Bragger "arrogant or boastful person," agent noun from brag (v.), is attested in English from late 14c. and has become practically a variant of this word.

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professor (n.)

late 14c., professour, "one who teaches a branch of knowledge," especially in a university, from Old French professeur (14c.) and directly from Latin professor "person who professes to be an expert in some art or science; teacher of highest rank," agent noun from profiteri "lay claim to, declare openly" (see profess). As a title prefixed to a name, it dates from 1706. Short form prof is recorded from 1838.

Professor. One professing religion. This canting use of the word comes down from the Elizabethan period, but is obsolete in England. [Thornton, "American Glossary," 1912]

This sense is traced in OED to 1530s, but is perhaps a revival by the English Puritans of the use of the word from c. 1400 in the sense of "one who openly professes religious faith."

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Goldilocks (n.)
name for a person with bright yellow hair, 1540s, from goldy (adj.) "of a golden color" (mid-15c., from gold (n.)) + plural of lock (n.2). The story of the Three Bears first was printed in Robert Southey's miscellany "The Doctor" (1837), but the central figure there was a bad-tempered old woman. Southey did not claim to have invented the story, and older versions have been traced, either involving an old woman or a "silver-haired" girl (though in at least one version it is a fox who enters the house). The identification of the girl as Goldilocks is attested from c. 1875. Goldylocks also is attested from 1570s as a name for the buttercup.
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