expression, i-adjective
unique; one of a kind; incomparable
Emphasizes that there is no second one like it; often used for irreplaceable people, experiences, or objects.
この景色は二つとない美しさだ。
This scenery has a beauty that is one of a kind.
彼は私にとって二つとない友人です。
He is an irreplaceable friend to me.