plural of one-on-one

plural of one-to-one

plural of one and one

(slang, MLE) on one's own

Occurring once, independent of any pattern; one-time. / Singular; unique; special; remarkable.

(idiomatic) Something that is done, created, etc. only once, and often quickly, simply, or improvisationally. / Something unique and remarkable.

A unique specimen.

Unique, singular, sui generis.

A unique example.

plural of one-of-a-kind