| noun | the form of a word that is used to denote a singleton |
| adjective | unusual or striking “a remarkable sight” |
| adjective | beyond or deviating from the usual or expected “a curious hybrid accent” |
| adjective | being a single and separate person or thing; ; -William James “can the singular person be understood apart from his culture?” |
| adjective | composed of one member, set, or kind |
| adjective | grammatical number category referring to a single item or unit |
| adjective | the single one of its kind “a singular example” |
| singularity | noun | strangeness by virtue of being remarkable or unusual |
| curiousness | noun | the quality of being alien or not native |
| curiosity | noun | something unusual -- perhaps worthy of collecting |
| oddity | noun | something unusual -- perhaps worthy of collecting |
| peculiarity | noun | something unusual -- perhaps worthy of collecting |
| queerness | noun | a strange attitude or habit |
| uniqueness | noun | the quality of being one of a kind |