Etymology — The Origins of English Words

Borrowed from Latin pectus.

From nonplus (“state of bewilderment or perplexity”, noun) or nonplus (“to bewilder or perplex (someone)”, verb) + -ed (suffix forming adjectives, and the past tense and past participle forms of verbs). Nonplus (noun) is derived from Latin nōn plūs (“no further, no more”), from nōn (“not”) + plūs (“additionally, more; further”) (ultimately from Proto-Indo-European *pleh₁- (“to fill”)). The etymological sense is similar to being left speechless as a result of confusion: the nonplussed person can say or do “no more”. Adjective sense 2 (“unaffected”) is probably from a misinterpretation of the first element of the word as the prefix non- meaning “not”.

From Medieval Latin impropriātus, past participle of impropriāre (“to take as one's own, appropriate”), from Latin in- + proprius (“one's own”).

From Middle French perfidie, from Latin perfidia from perfidus (“faithless, treacherous, false”), from fides (“faith”); related to, for example, English fidelity.

From Middle English lither, lyther (“deceitful; evil; false; treacherous; sinful, wicked; leading to cruelty, injustice, or wickedness, perverted; of a country: filled with wicked people; cruel, fierce; dangerous, deadly; frightening; grievous, painful; harmful, injurious; miserable, paltry, poor, worthless; feeble, sluggish; cowardly”) [and other forms], from Old English lȳþre (“bad, wicked; base, mean, wretched; corrupt”) [and other forms], from Proto-Germanic *lūþrijaz (“bad; dissolute; neglected; useless”), from Proto-Indo-European *(s)lew- (“limp, slack”). Sense 1.2 (“flexible, supple; agile, lithe”) is influenced by lithe. Cognates Dutch lodder (“wanton person”), loddering (“drowsy; trifling; wanton”) German liederlich (“dissolute”), German lotterig (“slovenly”), lüderlich (“slovenly”) Old English loþrung (“delusion, rubbish, nonsense”), loddere (“beggar”)

Morphologically in- + accuracy.

From Middle English manumitten, from Latin manūmittere, from pre-Classical Latin manū ēmittere (literally “send out from one’s hand”).

From knit + work.

From hand + lock.

From Madde (a medieval diminutive of Maud and Magdalene) + -son.

First attested in c. 1440; inherited from Middle English inoculaten (“to graft”), from Latin inoculātus, perfect passive participle of inoculō (“to ingraft an eye or bud of one plant into (another), implant”) (see -ate (verb-forming suffix)), from in- (“in”) + oculus (“an eye”) + -ō (verb-forming suffix).

From Latin indecōrum, neuter substantive of indecōrus.

From newspaper + woman.

From illegal + -ize or il- + legalize.

From French opportunisme, equivalent to opportune + -ism.

From mendicant + -cy.

From Late Latin plethoricus, from Hellenistic Ancient Greek πληθωρικός (plēthōrikós), from πληθώρα (plēthṓra, “plethora”). By surface analysis, plethora + -ic.

Borrowed from Latin neophytus, from Ancient Greek νεόφυτος (neóphutos, “newly planted”), from νέος (néos, “new”) + φυτόν (phutón, “plant, child”). By surface analysis, neo- + -phyte.

Borrowed from French marque. Doublet of mark. Ultimately cognate with marquee.

From late 18th century raff (“persons among the lowest class in society”) + -ish, still retained in contemporary English with riffraff. From Old French raffer (“to wear away”), of Germanic origin. Compare German raffen. Compare rip (“to tear”), rap (“to snatch”).

Anglicised form of Irish Mícheál or Scottish Gaelic Mìcheal. Also a spelling variant of Michael, generally considered erroneous.

From Middle English revilen, from re + Old French aviler (“to make vile or cheap, disprize, disesteem”), from a- (“to”) + vil (“vile, cheap”); see vile.

From Middle French inciser.

From non- + displayed.