cheatyoudaoicibaDictYouDict[cheat 词源字典]
cheat: [14] Cheat is a reduced form of escheat, a legal term for the reversion of property to the state on the death of the owner without heirs. This came from Old French escheoite, a derivative of the past participle of the verb escheoir ‘befall by chance, happen, devolve’, from Vulgar Latin *excadēre ‘fall away’, a compound verb formed from the prefix ex- ‘out’ and Latin cadere ‘fall’ (source of a wide range of English words from case ‘circumstance’ to occasion).

The semantic steps leading to the modern English sense of cheat seem to be ‘confiscate’; ‘deprive of something dishonestly’; ‘deceive’.

=> cadence, case, escheat, occasion, occident[cheat etymology, cheat origin, 英语词源]
dishonest (adj.)youdaoicibaDictYouDict
late 14c., from Old French deshoneste (13c., Modern French déshonnête) "dishonorable, horrible, indecent," perhaps from a Medieval Latin or Gallo-Roman compound of Latin dis- "not" (see dis-) + honestus "honorable" (see honest). The Latin formation was dehonestus. Related: Dishonestly.
finagle (v.)youdaoicibaDictYouDict
"get dishonestly or deviously," 1926, American English, possibly a variant of English dialectal fainaigue "to cheat or renege" (at cards), which is of unknown origin. Liberman says finagle is from figgle, phonetic variant of fiddle "fidget about," frequentative of fig. Related: Finagled; finagling.
flattering (adj.)youdaoicibaDictYouDict
late 14c., "pleasing to the imagination; dishonestly pleasing; having a false appearance of favorableness," present participle adjective from flatter. Meaning "gratifying to self-esteem" is from 1757. Related: Flatteringly.
fudge (n.2)youdaoicibaDictYouDict
"nonsense, rubbish," (1791), earlier and more usually as a contemptuous interjection, "lies! nonsense!" Probably a natural extension from fudge (v.) "put together clumsily or dishonestly," q.v. But Farmer suggests provincial French fuche, feuche, "an exclamation of contempt from Low German futsch = begone."
fudge (v.)youdaoicibaDictYouDict
"put together clumsily or dishonestly," by 1771 (perhaps from 17c.); perhaps an alteration of fadge "make suit, fit" (1570s), a verb of unknown origin. The verb fudge later had an especial association with sailors and log books. The traditional story of the origin of the interjection fudge "lies! nonsense!" (1766; see fudge (n.2)) traces it to a sailor's retort to anything considered lies or nonsense, from Captain Fudge, "who always brought home his owners a good cargo of lies" [Isaac Disraeli, 1791, citing a pamphlet from 1700]. It seems there really was a late 17c. Captain Fudge, called "Lying Fudge," and perhaps his name reinforced this form of fadge in the sense of "contrive without the necessary materials." The surname is from Fuche, a pet form of the masc. proper name Fulcher, from Germanic and meaning literally "people-army."
rat (v.)youdaoicibaDictYouDict
1812, "to desert one's party; 1864 as "to catch rats;" 1910 as "to peach on, inform on, behave dishonestly toward;" from rat (n.). Related: Ratted; ratting.
shuffle (v.)youdaoicibaDictYouDict
1530s, put together hastily," probably from Middle English shovelen "to move with dragging feet," itself probably a frequentative form of shoven (see shove (v.)). Or perhaps from Low German schuffeln "to walk clumsily, deal dishonestly."

Of playing cards, first recorded 1560s. Meaning "walk slowly without lifting the feet" is from 1570s. Meaning "push along gradually" is from 1560s. Meaning "move from one place to another" is from 1690s. Meaning "do a shuffle dance" is from 1818. Related: Shuffled; shuffling. Shuffle off "get rid of, dispose of" is from Shakespeare (1601).
tergiversation (n.)youdaoicibaDictYouDict
turning dishonestly from a straightforward action or statement; shifting, shuffling, equivocation, 1560s, from Latin tergiversationem (nominative tergiversatio) "a shifting, evasion, declining, refusing," from past participle stem of tergiversari "turn one's back on, evade," from tergum "the back" (of unknown origin) + versare "to spin, turn" (see versus).