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

Tittering

Unforced

Viper

Welders

Atmosphere

Bonkers

Conkers

Diverting

Errand

Flickering

Gerbera

Hoovering

Infernal

Jumpers

Kindergarten

Loitering

Mincer

Napier (mathematician from Scotland)

Operation

Pervasive