How do you, you specifically, define 'bottom'.

"thesis help"??

The passive partner.

Hopefully that has cleared it up for you.

r2 define 'passive' in the sexual context

R2, that's how I personally define "bottom". I don't take it to mean that something must be shoved up my bung hole to be considered a bottom (in fact, I hate anything shoved up my bung hole. A soft/wet tongue is okay/pleasurable, though)

In my mind, it's guys who only bottom and aren't versatile - and really like to bottom exclusively.

I hate the term 'passive' partner - it never really holds up and it's too much of a mirror to supposedly heterosexual norms.

You'll find in all relationships, there is give and take where either partner will take the lead depending on the situation.

Sounds so regressive and makes gays out to be weaklings - and we've certainly survived way too much to be called weaklings.

We only have the terms "active" and "passive" in my language because "top" and "bottom" can only ever function as adverbials of direction and adverbs of place, it's impossible to use them as nouns to refer to people.

So it's not always to do with mirroring heterosexual norms, sometimes it's just practicality stemming from boring language stuff. And I can tell you from personal experience that repressiveness and stigma of these terms evolves as society matures, just as it does for "top" and "bottom" in English, so their meaning is by no means fixed.