稀 (rare, phenomenal, dilute (acid))

ピカソのような画家がかは稀まれだ。

Such painters as Picasso are rare.

主として稀代の悪女という評価が伝えられる。

She is mainly remembered as a uniquely notorious wicked woman in history.

前田家の決済はすべて利家自身で行ったため、愛用の算盤が前田家家宝として残っている（算盤は当時に日本に伝わったばかりであり、それを使えるというだけで稀有な事であった）。

As Toshiie carried out all the settlement of the Maeda family in person, his favorite soroban (abacus) has been handed down as a treasure of the Maeda family (a soroban had just been introduced to Japan at that time, so it was uncommon enough to be able to use it.)