# Riley is back in Class

My Prefix is a pet
My suffix violent,
My Infix thinks himself
to be most important

What Am I?

Are you:

CATEGORY

My Prefix is a pet

CAT

My suffix violent

GORY

My Infix thinks himself to be most important

EGO

And the title: Riley is back in Class

"Class" is a synonym of "category".

• awesome, you got it.. i will accept the answer tomorrow . – Shahriar Mahmud Sajid Sep 5 '18 at 12:02

This may be a partial answer:

Why not

CATION

Prefix is a pet

CAT

suffix violent

ION (an atom or molecule with a net electric charge due to the loss or gain of one or more electrons)

My Infix thinks himself

I

to be most important

CATION means a positively charged ion, i.e., one that would be attracted to the cathode in electrolysis

and Title: 'Riley is back in Class'

• the suffix part is a bit of a stretch, and the 'to be most important part' is about the infix, not whole word, but nevertheless a nice answer $(+1)$ for you – Shahriar Mahmud Sajid Sep 7 '18 at 15:56