A different way of saying mistaking
You're telling me I'm not Ryan Gosling? You're mistakening!
A slightly less serious version of the word insane.
Jack: You're having sex with a crocodile-human?! You're insane!
Tanya: That is too rough of a word, I am just a bit mentally unsane.
With a resemblance or characteristic of a humanoid appearance.
I thought he was a crocodile, until I see his humanoidesque body.
Having a tinge of scales or having the similarity of scale.
His scalelish crocodile body excites me.