1. (adjective) radically distinctive and without equal

• alone
• unequaled
• unequalled
• unparalleled

2. (adjective) the single one of its kind

• singular

1. (adjective) radically distinctive and without equal

• incomparable
• uncomparable

2. (adjective) (followed by to') applying exclusively to a given category or condition or locality

• specific

3. (adjective) the single one of its kind

• single

4. (adjective) highly unusual or rare but not the single instance

• unusual

1. (adjective) radically distinctive and without equal

• singularity
• uniqueness

2. (adjective) (followed by to') applying exclusively to a given category or condition or locality

• singularity
• uniqueness

3. (adjective) the single one of its kind

• singularity
• singularity
• uniqueness
• uniqueness