There are 2 definitions of rare in English:

rare1

Syllabification: rare
Pronunciation: /re(ə)r
 
/

adjective (rarer, rarest)

  • 1(Of an event, situation, or condition) not occurring very often: a rare genetic disorder [with infinitive]: it’s rare to meet someone who’s content with their life
    More example sentences
    • The best that most of us can do is to live with it, enjoy it and be thankful it is such a rare event.
    • She was diagnosed with a rare condition that inflamed her liver at just six weeks old.
    • The condition is so rare it only affects a handful of women in the world each year.
    Synonyms
    infrequent, scarce, sparse, few and far between, thin on the ground, like gold dust, as scarce as hen's teeth; occasional, limited, odd, isolated, unaccustomed, unwonted
  • 1.1(Of a thing) not found in large numbers and consequently of interest or value: the jellyfish tree, one of the rarest plants on earth
    More example sentences
    • They are too rare and valuable a bird to be hawked about with the rest of your menagerie.
    • At that time, many people showed a keen interest in studying rare animals and birds.
    • Yet the site is also home to rare mammals such as water voles and rare plants such as pepper saxifrage.
    Synonyms
    unusual, recherché, uncommon, unfamiliar, atypical, singular
  • 1.2Unusually good or remarkable: he plays with rare strength and sensitivity
    More example sentences
    • For the rare or unusual gift, a trip round the antique or second-hand shops and a little imagination is all you need.
    • Artistically, it is a rare and precious gem that demands careful examination.
    • To be able to take a stand like he did is rare and precious thing in politics.
    Synonyms
    exceptional, outstanding, unparalleled, peerless, matchless, unique, unrivaled, inimitable, beyond compare, without equal, second to none, unsurpassed; consummate, superior, superlative, first-class
    informal A1, top-notch

Derivatives

rareness

noun
More example sentences
  • He bought his records on import, and the exclusivity and rareness of the music gave it a profound glamour.
  • Where there is rareness, there is exclusiveness, and it is an exclusive type of environment.
  • The exceptions shine out all the more brilliantly for their rareness.

Origin

late Middle English (in the sense 'widely spaced, infrequent'): from Latin rarus.

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noun
a powerful whirlpool in the sea

There are 2 definitions of rare in English:

rare2

Syllabification: rare
Pronunciation: /
 
re(ə)r/

adjective (rarer, rarest)

  • (Of meat, especially beef) lightly cooked, so that the inside is still red.
    More example sentences
    • To them, it tastes as good as medium rare steak.
    • This was sent back to the kitchen as the rare steak was overcooked and the sauce was burnt.
    • The spicy beef was rare and served with green mango and coriander, but lacked any real zing.

Origin

late 18th century: variant of obsolete rear 'half-cooked' (used to refer to soft-boiled eggs, from the mid 17th to mid 19th centuries).

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