one of a kind

Without any duplicate

One of a kind describes something unique—the only one of its type in existence.

A one-of-a-kind antique has no duplicate.

The phrase often conveys admiration: She's truly one of a kind.

It can modify nouns directly or stand alone as a predicate: This opportunity is one of a kind.

Opposites
uniqueness/commonality

one of a kindcommon

Widespread and unremarkable

dime a dozen · a dime a dozen · ordinary · typical · commonplace

production method

one of a kindmass-produced

Made in large quantities

manufactured · machine-made · prefabricated · off-the-shelf · off-the-rack

specialness/ordinariness

one of a kindunremarkable

Not worthy of comment

unexceptional · pedestrian · mundane · nondescript · forgettable

Family

one, kind, individual, nonpareil, one-of-a-kind

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Positive · Everyday, not technical · Rated G