The Game of Doublets--Reboot f

Roused

rousted

Routed

Router

rooter

Rootier

roomier

roomie

Roomies

Roomiest

Doomiest

boomiest

Broomiest

Bloomiest ??

Yes that is valid. And much nicer than

Bloodiest

broodiest

I thought I won this round at least twice.

Forgive my presumptuousness in not waiting to be asked, but the new word is:

is

His

hid