The property of being rare; rarity

plural of rareness

Very uncommon; scarce. / (of a gas) Thin; of low density. / (UK, slang) Good; enjoyable.

(gaming) A scarce or uncommon item.

(cooking) Particularly of meat, especially beefsteak: cooked very lightly, so the meat is still red.

(US, intransitive) To rear, rise up, start backwards. / (US, transitive) To rear, bring up, raise.

(obsolete) Early.

Not occurring at a regular interval; seldom; not often. / Unusually well; excellently. / To a rare degree; very.

Eager.

present participle of rare