affirming

Short definition from Wiktionary

Verb

1. 1
   present participle and gerund of affirm

Noun

1. 1
   The act of one who affirms something; an affirmation.

Adjective

1. 1
   That affirms.
2. 2
   Accepting of same-sex/same-gender sexual relationships – or, more broadly, the gender identities, sexual orientations, and sexual relationships of LGBTQ people – on the same terms as those of cisgender, heterosexual people.