Person not in a marital, romantic or sexual relationship
In legal definitions for interpersonal status, a person who is single is an individual not in a committed relationship, married, or part of a civil union.[1][2]
^Koropeckyj-Cox, Tanya (2009), "Singlehood", in Carr, Deborah (ed.), Encyclopedia of the Life Course and Human Development, Later Life, vol. 3, Macmillan Reference USA, pp. 370–375, retrieved 23 April 2019