Citations:retransitioner

Noun: "one who undergoes gender reassignment again after having destransitioned to their birth-assigned gender"

 * 2019, Jennie Kermode, Supporting Transgender and Non-Binary People with Disabilities or Illnesses: A Good Practice Guide for Health and Care Provision, page 73:
 * In some cases, retransitioners choose a new name in recognition of the fact that this is a new stage of their lives.

Noun: "one who returns to their birth-assigned gender after undergoing gender reassignment"

 * 2018, Alexander Yoo, "Transition Regret and Detransition", in Lesbian, Gay, Bisexual, and Transgender Americans at Risk: Problems and Solutions (eds. Chuck Stewart), page 187:
 * The same groups of people who react negatively to detransitioners/retransitioners (lobbing accusations of self-hating, anti-trans plants, or TERF