Sentence examples for is even rarer from inspiring English sources
The phrase 'is even rarer' is correct and usable in written English
You can use it when referring to a comparative degree of rarity. For example, "The white tiger, which is already very rare, is even rarer in the wild."
The puaiohi is even rarer.
Spotting two together is even rarer.
Appetizers are rare, and dessert is even rarer.
And on some tribal lands, phone service is even rarer.
It is even rarer still for a partner to leave Cravath for another firm.
But that was rare in American history, and is even rarer abroad.
Perhaps great writing about sex is even rarer than great sex itself.
I rarely see it on menus, and a good version of it is even rarer.
In the major leagues, hitting four homers in a game is even rarer than throwing a perfect game.
But what is even rarer than the ability is the desire to write, as Walcott does, with such abundance and felicity.
NF2 is more rare, affecting just over 1,000 people in the UK and Schwannomatosis, a third type, is even rarer.
