A-W of words containing letters "er" anywhere in the word (Part 1)

Counterpanes

Dander

Entranced

Fervour

Grumpier

Happier

Inertia

Jailer

Killer

Liter

Meritorious

Napierian (logarithms)

Overture

Pooper

Quander

Rockers

Serotonin

Thermometer

Undertaker

Verdigris