DictionarysingletonSingle person or thing
noun

singleton

SING-gul-tun/ˈsɪŋɡltən/

A sole member rather than part of a multiple set.

The red sock is a singleton beside three matching pairs.

One lone mismatched red sock separated from three neatly matched pairs of blue socks.
Etymology

The idea of 'one, separate' first named a lone card of its suit in a hand. Singleton later broadened to other instances of singularity, including a person or thing considered apart from others.

In context

Doctors' Circle World's Largest Health Platform0:41
a certain type of twin pregnancies require to definitely a lot more frequent number of ultrasounds in pregnancy just because you have twins compared to a singleton
Twin Pregnancy vs Singleton -Dr Shetal Mehta of Cloudnine Hospitals | Doctors' Circle

More examples

  • With no other hearts in my hand, the ace is a singleton.
  • Unlike her twin brothers, Maya was born a singleton.
  • The application uses a singleton to manage its settings.

Forms

singleton · singletons

single adjective — Existing alone rather than with others.

Similar words

individual
Emphasizes a separate person or thing, even within a group.
single
Often refers to an unmarried person or an individual item.