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

gonads

donuts

studio

studly

loudly

doughy

roughy

yogurt

gurney

gyrate

realty

really

clears

sclera

rascal

Alaska

skalds

slaked

(Radar, what happened to you?

I don’t know. I think I’ve been slaked.)

pedals

sidled