Gay/lesbian/bisexual/transgender

"loD be' je ngaghbogh loD" (Man who has sex with men and women, i.e. bisexual) and "be' mojpu'bogh loD" (Man who has become a woman)…

K'Ehleyr

ST:TNG character, half-Klingon emissary and ambassador. https://memory-alpha.fandom.com/wiki/K'Ehleyr

Mr./Ms./-san

Some Klingons have names that resemble general nouns ({QaS, Qel}), which may be confusing in some contexts. Titles could be used to disambiguate in some…

Tawi'yan

role analogous to best man at Klingon wedding

mentor

trusted guide or advisor, usually within a particular field or organization

Sibling (gender-neutral term)

"Do you have any siblings?" "Is this your sibling?" (Perhaps asked to a species or culture or even just about an individual whose gender identity…