Singular may refer to: . Singular, the grammatical number that denotes a unit quantity, as opposed to the plural and other forms; Singular homology; SINGULAR, an open source Computer Algebra System (CAS); Singular or sounder, a group of boar, see List of animal names; Singular matrix, a matrix that is not invertible; Singular measure, a measure or probability distribution …

Singular they, along with its inflected or derivative forms, them, their, theirs and themselves (or themself), is an epicene (gender-neutral) third-person pronoun.It typically occurs with an unspecified antecedent, in sentences such as: "Somebody left their umbrella in the office. Could you please let them know where they can get it?" "The patient should be told at the outset how …