Change one letter

Drinker

Drunker

Drunken

Dunkers

Undress

Asunder

Resound

Bounder

blunder

Bundles

Bungles

Unglues

Snuggles

I happen to like the extra S in snuggles…more snuggles the better.
However, I will get back to business (sigh) and remove one of yours.

Niggles

Giggles

Goggles

Woggles

It’s quite a few years since i wore one of those on my scouts scarf.

Wiggles

Waggles

Swagger