Theyby (plural theybies) and non-binary baby are neologisms for a baby or child raised in a way that is gender-neutral, allowing children to explore their own gender and expression on their own terms, and also referring to the accompanying parenting style. The terms and movement were initially popularized in 2018,[1][2] preceding several reports of babies in 2017 being born without being assigned a gender.[3][4][5] The practice of raising babies as gender neutral has been reported as early as 2009[6] and 2011.[7] The term theyby, however, was first used in 2017. The term is a blend of the pronoun 'they' and 'baby'. Until children raised as theybies figure out their gender and pronouns, they are referred to by the parents using they/them pronouns.[1][8]