A-W of words containing letters "er" anywhere in the word (Part 2)

Operation

Perfection

Querulous

Rendered

Slaters

Teenagers

Underlings

Version

Wolverine

Allergenic

Brothers

Clutter

Dapper

Ephemeral (lasting for a very short time:)

Filler

Guilders

Hyperthyroidism

Inverness

Joker

Kinder