eighty

From Middle English eiȝti, eyȝty, eiȝtety, aghty, from Old English hundeahtatiġ, from Proto-Germanic *ahtōutēhundą (“eighty”), equivalent to eight + -ty. Cognate with Scots hechty, auchty (“eighty”), Saterland Frisian tachentich (“eighty”), West Frisian tachtich (“eighty”), Dutch tachtig (“eighty”), Low German tachentig (“eighty”), German achtzig (“eighty”), Swedish åttio (“eighty”), Norwegian åtti (“eighty”), Icelandic áttatíu (“eighty”).

The cardinal number occurring after seventy-nine and before eighty-one, represented in Roman numerals as LXXX and in Arabic numerals as 80.

quatre-vingts

All French-speaking countries except part of Switzerland and Acadia


eightieth

From earlier eighteth, from Middle English eightithe, eiȝtetithe, eiȝtithe; equivalent to eighty + -eth. For the modern form, see the etymological notes at twentieth.


octogenarian

/ˌɑktəd͡ʒɪˈnɛɹiən/

/ˌɒktəd͡ʒɪˈnɛəɹɪən/

From Latin octōgēnārius + -an (suffix forming adjectives and representative nouns), either directly or via French octogénaire, from Latin octōgēnus (“80 each”) + -ārius (“-ary”), from octōgintā (“eight tens, 80”).

Mama was by no means the only grandma present, for the octogenarians had turned out en masse from their huts and lean-tos and were paddling about, diving and splashing as unconcernedly as though they really belonged in the sea rather than on land.

1929, Robert Dean Frisbee, The Book of Puka-Puka (republished by Eland, 2019; p. 75f; emphasis in original)

Finsbury Park station, one of the most important L.N.E.R. suburban junctions, is now an octogenarian.

1941 October, “Notes and News: Finsbury Park Station”, in Railway Magazine, page 466:

To replace logarithmic tables with natural tables required some time. This seems like a modern age, yet I am not an octogenarian and I can remember the dying gasp of the logarithmic table as the standard method of computation. I have seen the desk calculator become a necessary instrument for every scientist who is doing quantitative work.

1951, IBM Corp., Proceedings, Computation Seminar, page 13:

First up for recriminations may be President Biden. What if the octogenarian had stuck to his original suggestion that he’d be a “bridge” president – i.e., a one-termer – and announced he wouldn’t run for a second term early last year, allowing for a proper primary competition among the next generation of Democratic leaders?

2024 November 6, Linda Feldmann, “What Trump’s historic victory says about America”, in The Christian Science Monitor:

Synonym of eightysomething: a person between 80 and 89 years old.


fourscore

Thou ſtick'ſt a dagger in me, I ſhall neuer ſee my gold againe, foureſcore ducats at aſitting, foureſcore ducats.

c. 1596–1598 (date written), William Shakespeare, “The Merchant of Venice”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene i], page 173:

Euen thoſe that were numbꝛed of them, were eight thouſand, and fiue hundꝛed, and foureſcoꝛe.

1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], →OCLC, Numbers 4:48:

“I could be sorry for these men,” he said, “ay, and for that poor Queen, but what avail earthly sorrows to a man of fourscore?—and it is a rare dropping morning for the early colewort.”

1820, [Walter Scott], chapter XI, in The Abbot. […], volume III, Edinburgh: […] [James Ballantyne & Co.] for Longman, Hurst, Rees, Orme, and Brown, […]; and for Archibald Constable and Company, and John Ballantyne, […], →OCLC, page 353:

Four score and seven years ago our fathers brought forth, on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal.

1863 November 19, Abraham Lincoln, Dedicatory Remarks (Gettysburg Address)^(https://en.wikisource.org/wiki/Gettysburg_Address_(Bliss_copy)), near Soldiers' National Cemetery, →LCCN, Bliss copy, page 1:

Old Martha was standing at a table trussing a pair of chickens for the market stall as she had trussed them for nearly fourscore years.

1914, Saki, ‘The Cobweb’, Beasts and Superbeasts:


octogenary

From Latin octōgēnārius (“containing 80”) either directly or via French octogénaire, from Latin octōgēnus (“80 each”) + -ārius (“-ary”), from octōgintā (“eight tens, 80”). Cognate with octogenarian.

(obsolete) Synonym of eightysomething: a person 80 to 89 years old.


eightysomething

She was a sprightly eightysomething.

Instead of twentysomethings with one rare but curable disease, they find eightysomethings with many common chronic diseases that aren't curable.

2011, Mark Lachs, M.D., chapter 3, in What Your Doctor Won't Tell You About Getting Older:

Aunt Zena and Uncle Bill Druss are the coolest eightysomethings I know of, and I will gladly eat the early bird special or visit Sawgrass Mills with them anytime.

2012, Elizabeth Wurtzel, Bitch: In Praise of Difficult Women, page 429:

(colloquial) A person between 80 and 89 years old.


eightiethly

Eightiethly, the prosecution has adduced and relied upon the evidence of PW.80 Channabasava Rajendra […]

2015 September 29, Bangalore District Court, State By Cbi/Acb vs Sri. S. Siddalingaswamy on 29 September, 2015:

In the eightieth place; eightieth in a row.