Mispronominal is a term describing people who feel comfortable with a set of pronouns when some people refer to them as such, but when other people refer to them with these pronouns it becomes uncomfortable or even spark a feeling of dysphoria. An example can be how maybe when the mispronominal person's sibling uses he/him its ok, but when other people refer to them as he/him its uncomfortable.
Mispronominal people may feel comfortable with some people using a certain set of pronouns for them that other people can't without discomfort because of a close emotional bond with the oerson, the sound of their voice while saying the pronouns, or for unspecified/unidentifiable reasons.
Mispronominal people most likely are also Multipronominal, and will have at least one set of pronouns that is comfortable at all times, if not more.
History
This term was coined by a FANDOM user who would wish to remain anonymous regarding this on December 24, 2021. They made the term regarding their own experience with pronouns and gender