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rarest

  • superlative
    of rare.
    rare
    adjective
    coming or occurring far apart in time; unusual; uncommon: His visits are rare occasions.

Example Sentences

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Amira McKee spent a night out with the biologists racing to pull America’s rarest predator back from the brink.

From The Wall Street Journal ● Nov. 4, 2026

Scientists needed increasingly sophisticated instruments to investigate the rarest and most energetic neutrinos arriving from space.

From Science Daily ● Nov. 2, 2026

One of the world's rarest bats could be at risk if ExxonMobil forges ahead with a Papua New Guinea gas project, a law firm working with impacted landowners warned Monday.

From Barron's ● Nov. 2, 2026

The 40-inch doll made by Carousel for Reubens’ JCPenney-exclusive line in the late 1980s is one of the rarest Pee-wee Herman collectibles.

From Los Angeles Times ● Oct. 2, 2026

Since the time of the alchemists, more and more elements have been discovered, the latest to be found tending to be the rarest.

From "Cosmos" by Carl Sagan