Etymology
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quid (n.1)

"bite-sized piece" (of tobacco, etc.), "a portion suitable to be chewed or held in the mouth," 1727, dialectal variant of Middle English cudde, from Old English cudu, cwidu (see cud).

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quid (n.2)

"a sovereign, one pound sterling," 1680s, British slang, possibly from quid "that which is, essence," (c. 1600, see quiddity), as used in quid pro quo (q.v.), or directly from Latin quid "what, something, anything." Compare French quibus, noted in Barrêre's dictionary of French argot (1889) as a word for "money, cash," said to be short for quibus fiunt omnia (see quibble (n.)).

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quidnunc (n.)

"gossip-monger, one who is curious to know everything that happens," 1709 (as two words), etymologically "what now?" From Latin quid "what?" (neuter of interrogative pronoun quis "who?" from PIE root *kwo-, stem of relative and interrogative pronouns) and nunc "now" (see now), to describe someone forever asking "What's the news?"

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quiddity (n.)

"a trifling nicety in argument, a quibble," 1530s, from Medieval Latin quidditas "the essence of things," in Scholastic philosophy, "that which distinguishes a thing from other things," literally "whatness," from Latin quid "what," neuter of indefinite pronoun quis "somebody, someone or other" (from PIE root *kwo-, stem of relative and interrogative pronouns).

The sense developed from scholastic disputes over the nature of things. Original classical meaning "real essence or nature of a thing, that which distinguishes a thing from other things and makes it what it is" is attested in English from late 14c. (quidite).

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quillet (n.)

"a quibble, a nicety or subtlety," 1580s, obsolete, probably a corruption or contraction of Latin quidlibet "what you please," from quid "anything," neuter of indefinite pronoun quis "somebody, someone or other" (from PIE root *kwo-, stem of relative and interrogative pronouns) + libet "it pleases" (from PIE root *leubh- "to care, desire, love").

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quip (n.)

"smart, sarcastic remark," 1530s, a variant of quippy in the same sense (1510s), perhaps from Latin quippe "indeed, of course, as you see, naturally, obviously" (used sarcastically), from quid "what" (neuter of pronoun quis "who," from PIE root *kwo-, stem of relative and interrogative pronouns) + emphatic particle -pe. Compare quibble (n.).

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chaw (v.)

"to chew, chew roughly," 1520s, unexplained phonetic variant of chew (v.). OED notes that the variant form chow was "very common in 16-17th c." Bartlett's "Dictionary of Americanisms" [1859] says chaw, "Although found in good authors, ... is retained, in this country as in England, only by the illiterate." Related: Chawed; chawing. The noun meaning "that which is chewed" (especially a quid of tobacco) first recorded 1709.

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quibble (n.)

1610s, "a pun, a play on words," probably a diminutive of obsolete quib "evasion of a point at issue" (1540s), which is based on Latin quibus? "by what (things)?" Its extensive use in legal writing supposedly gave it the association with trivial argument: "a word of frequent occurrence in legal documents ... hence associated with the 'quirks and quillets' of the law." [OED].

Latin quibus is dative or ablative plural of quid "in what respect? to what extent?; how? why?," neuter of relative pronoun quis (from PIE root *kwo-, stem of relative and interrogative pronouns).

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animal (n.)

early 14c., "any sentient living creature" (including humans), from Latin animale "living being, being which breathes," noun use of neuter of animalis (adj.) "animate, living; of the air," from anima "breath, soul; a current of air" (from PIE root *ane- "to breathe;" compare deer). A rare word in English before c. 1600, and not in KJV (1611). Commonly only of non-human creatures. It drove out the older beast in common usage. Used derisively of brutish humans (in which the "animal," or non-rational, non-spiritual nature is ascendant) from 1580s.

Quid est homo? A dedlych best and resonable, animal racionale. ["Battlefield Grammar," c. 1450]
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accident (n.)

late 14c., "an occurrence, incident, event; what comes by chance," from Old French accident (12c.), from Latin accidentem (nominative accidens) "an occurrence; chance; misfortune," noun use of present participle of accidere "happen, fall out, fall upon," from ad "to" (see ad-) + combining form of cadere "to fall," from PIE root *kad- "to fall."

The sense has had a tendency since Latin to extend from "something that happens, an event" to "a mishap, an undesirable event." Latin si quid cui accidat, "if anything should happen to one," was a euphemism for "if one should die." In Middle English the word is met usually in theology (in reference to the material qualities in the sacramental bread and wine), medicine ("something out of the ordinary, disease, injury"), or philosophy ("non-essential characteristic of a thing").

From late 15c. as "the operations of chance." Meaning "an unplanned child" is attested by 1932. Accident-prone is from 1926.

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