Seven-letter words - change zero to two letters to make a new word (Part 1)

I’m an idiot.

In play:

boggled

bobsled

tousled

jealous

zealous

sleazes

azaleas

sealant

tanager

teenage

Gentile

genteel

tensile

tonsils

fusions

fussing

gunfire

firebug

freebie

beefier