Noun, する verb, and の adjective
こうしょう
クリステンは、交渉のプロです。
Kristen is a professional negotiator.
なんとか交渉してみますが、期待はしないでくださいね。
I'll try negotiating, but please don't expect anything.
新婚旅行の際、フグはサーモンが値段の交渉が得意だということを知ってとても感心した。
On their honeymoon, Fugu was very impressed to find out Salmon is very good at negotiating on prices.
When you ford into the thick of things and mix everything up, you're getting involved in a negotiation. That's what negotiations are though, right? You gotta get right in there, fording through the muck. Then, you gotta mix things up and compromise between both parties.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.