: lacking distinction or singularity : not unique nonunique products nonunique passwords.

What's a word for not unique?

1 scarce, infrequent; odd, singular, strange, peculiar, queer.

What is meant by the term uniqueness?

noun. the quality of being unlike anything else of its kind or of being solitary in type or characteristics: Owing to its physical and behavioral uniqueness, the osprey is classified in its own family. the quality of being unequaled, incomparable, or unusual: Critics are praising the uniqueness of her performance art.