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

Ulcerative

Viper

Welter

Amber

Bereaved

Ceramic

Dermatology

Ermine

Fletcher

Gerbil

Herbivore

Herbal

Internally

Jerry

Kerosene

Leered

Merriment

Ne’er do well
One word? you decide.

Operatic

Percussion