Etymologically

rare

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English has two words spelled rare: “uncommon”, from Latin rarus, and “lightly cooked”, from Old English hrēr.[1][2][3]

Pronunciation

  • IPA: UK /reə/, US /rer/[4]

rare1 uncommon

Etymology

The uncommon sense is inherited from Middle English rere, also rare,[1] borrowed from Old French rer (“sparse, hard to find”),[5][1] and directly from Latin rārus (“thinly sown, loose in texture, infrequent”),[5][1][6] the opposite of densus;[5] its origin is uncertain,[1] and Merriam-Webster suggests a link with Latin rēte (“net”).[3]

Earliest recorded meaning

Thin, airy, porous, of a substance: 1392 in Barnhart,[1] the late 14th century in Etymonline,[5] and about 1420 in the OED.[7]

Semantic evolution

From “having its particles far apart” came “few in number”, which led to “unusual”.[5] Widely spaced, sparsely distributed and seldom found is from the mid-15th century,[5][7] and “uncommon, exceptional” from 1447.[1] “Uncommonly good” is from the late 15th century, in Caxton,[5] and Barnhart cites Shakespeare's Merchant of Venice (1596) for “unusually good or great”.[1] Rare earth in chemistry is from 1818.[5] Rarity meant “thinness” before 1425 and “something rare” from 1592.[1] In many dialects rare meant “fine, splendid” and was also an intensive adverb.[8]

Timeline

  • 1392 – thin, airy.[1]
  • 1447 – uncommon.[1]
  • late 15th century – uncommonly good.[5]
  • 1592 – rarity, a rare thing.[1]
  • 1818 – rare earth.[5]

Modern meaning

Adjective

  1. Not occurring or found often; uncommon.
  2. Unusually good; excellent.
  3. Thin in density: rare mountain air.

Word family

  • rarely
  • rareness
  • rarity
  • rarefy

rare2 lightly cooked

Etymology

The cooking sense is inherited from Middle English rere,[1] inherited from Old English hrēr (“lightly cooked”),[5][1] probably related to hrēran (“to stir, move”),[1][5] from Proto-Germanic *hrōrijaną,[5] which is reconstructed from Proto-Indo-European *kere- (“to mix, confuse; cook”).[5] Old English hrēran is cognate with Dutch roeren and German rühren “to stir”.[1][5] The modern form is a variant of dialectal rear,[1][2] altered after rare1.[3]

Earliest recorded meaning

Of eggs, soft-cooked: 1655 for the form rare,[1][7] the 1650s in Etymonline.[5] Old English hrēr is from about 1000.[1]

Semantic evolution

It was used at first of eggs, and of meat from 1784.[1][5] The OED notes that it was once thought an Americanism, though it was current in many English dialects and used by English writers in the early 19th century.[5][7]

Timeline

  • c. 1000 – Old English hrēr.[1]
  • 1655 – of eggs, soft-cooked.[1][7]
  • 1784 – of meat.[1][5]

Modern meaning

Adjective

  1. Of meat, cooked lightly so that the inside is still red.
  • rear
  • dense

Usage notes

A third word, the American verb rare “to rise on the hind legs”, from 1833, is a dialect form of rear,[1][5] and raring to go is recorded from 1909.[1][5] Etymonline quotes the Century Dictionary: rare says that few of a kind exist, while scarce implies that there were once, or usually are, more.[5]

References

  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x y Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  2. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  3. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  5. ^ a b c d e f g h i j k l m n o p q r s t u v Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  7. ^ a b c d e Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  8. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)