Twinness

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The state, quality, or condition of a twin; twinship. uncountable

    "In her tales of growing up he was her ever-present partner in crime, the shadow who sometimes strode ahead, sometimes followed behind, without ever becoming detached from their twinness, an introspective boy who disapproved of her relationships (‘always with older boys, of course’) but helped her keep them hidden from her sister and Aunty Naseem, while remaining perpetually in love with one or another of Aneeka’s friends, who all insisted they loved him as a brother."

Example

More examples

"In her tales of growing up he was her ever-present partner in crime, the shadow who sometimes strode ahead, sometimes followed behind, without ever becoming detached from their twinness, an introspective boy who disapproved of her relationships (‘always with older boys, of course’) but helped her keep them hidden from her sister and Aunty Naseem, while remaining perpetually in love with one or another of Aneeka’s friends, who all insisted they loved him as a brother."

Etymology

From twin + -ness.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.