Greek

Ikey the blacksmith had forged us a spearhead after a sketch from a picture of a Greek warrior; and a rake-handle served as a shaft.

1879, R[ichard] J[efferies], chapter II, in The Amateur Poacher, London: Smith, Elder, & Co., […], →OCLC:

Of or relating to Greece, its people, its language, or its culture

(figurative, colloquial) Synonym of incomprehensible, used for foreign speech or text, technical jargon, or advanced subjects.

“Every single person is going to have a different experience watching this film,” she said when I asked about possibly labeling the Greek system as “toxic”.

2023 May 24, Adrian Horton, “‘Competitive femininity’: inside the wild and secretive world of sororities”, in The Guardian, →ISSN:

(US, not comparable) Of or relating to collegiate fraternities, sororities, and/or (uncommon) honor societies.

en-adj

Greek (comparative Greeker, superlative Greekest)

Greeker (comparative)
Greekest (superlative)

Grieks

of or relating to Greece, its people, its language, or its culture

Inherited from Old English Grēcas (“Greeks”), variant of Crēcas, from Proto-West Germanic *Krēkō, from Latin Graecus of uncertain origin, perhaps derived from the toponym Γραῖα (Graîa) or from other Paleo-Balkanic forms from a tribal name Graii.
Greek in any case has the cognate Γραικός (Graikós), the mythological ancestor of the Γραίοι (Graíoi, “Graecians”). Germanic cognates include Dutch Griek, German Grieche. The ⟨g⟩ in English and Germanic cognates was restored under influence from French grec and classical Latin Graecus. The adjective dates to 14th-century Middle English, replacing Old English Grēċisċ (“Greekish”) and earlier Middle English Gregeis. In reference to fraternities and sororities, a clipping of earlier Greek-letter in reference to their usual names being initialisms of mottos in the Greek language. In reference to terms used to analysize financial derivatives, from their usual names consisting of Greek letters.


Greek

The language spoken by people of Greece, particularly, depending on context, Ancient Greek or Modern Greek.

en-proper noun

Greek (countable and uncountable, plural Greeks)


Greek

(countable) A person from Greece or of Greek descent.

(uncountable) Greek cuisine, traditional or representative Greek food.

"I don't hear one word in ten that they say," continued Mrs. Abingdon; "it's Greek to me. However, ..."

1821, Mary Jane Mackenzie, Geraldine, page 8:

"It's all Greek to me," said my companion at the outset, but as the warrior continued, his fears arose within him; it might be sentence of death—what did he know what it might not be?

1859, Kinahan Cornwallis, Two Journeys to Japan, 1856–7, volume 2, page 246:

preferred risk... family maintenance... 20-pay life. That's a bare sampling of the merchandise you're asked to pick and choose from. If it sounds like Greek to you, don't worry. It sounds like Greek to most people.

1951 December, “Which Kind of Life Insurance Policy?”, in Changing Times – The Kiplinger Magazine, volume 5, number 12, page 28:

(uncountable, figurative, colloquial) Synonym of gibberish, used for foreign speech or text, technical jargon, or advanced subjects.

(uncountable, figurative, colloquial) Synonym of lorem ipsum, dummy placeholder text used in greeking.

Was Joe a Greek in college?

(countable, US, colloquial) A member of a collegiate fraternity or sorority.

The wind-up is, that the father becomes bankrupt; the wife and daughters town-traders; the sons Greeks, Fancy-swells, Conveyancers (pickpockets), or Cracksmen (house breakers), and the New Drop is the last drop they ever take.

1822, A Morning in Cork-Street: or, Raising the wind, page 102:

When Greek meets Greek neither is wont to get much satisfaction.

1897, Stanley John Weyman, “The Deanery Ball”, in For the Cause:

(countable, archaic, slang) A cunning rogue.

(countable, archaic, slang) A merry fellow.

She is absolutely a total GFE, no limits, except no Greek. (Well...I say “no Greek” - - if she is really hot for you, and if she is really turned on in a long session, she might beg for a finger in her anus while you suck her clit, but she is just too tiny and tight for any “real meat” in the backdoor.)

2001, "ASP: 'Julie' of Oral-Land-Oh", alt.sex.prostitution, Usenet

“What's within reason?” “Hand-job, blow-job, full sex — straight, full service. Greek, maybe, if you're not too big. Golden shower, if you like, but not reverse. No hardsports. And absolutely nothing without.”

2012, Maxim Jakubowski, The Best British Crime Omnibus:

(finance, chiefly in the plural) One of the Greeks, measures of derivative price sensitivity.


Greek

A discovery of Greeking at Brighton, has made considerable noise this month in the sporting world.

1817, Sporting Magazine, number 50, page 284:

(uncommon) Alternative letter-case form of greek.

en-verb

Greek (third-person singular simple present Greeks, present participle Greeking, simple past and past participle Greeked)

Greeks (present singular third-person)
Greeking (participle present)
Greeked (participle past)
Greeked (past)

Greek–English Dictionary: from Webster’s Dictionary