"Snide"

My great grandfather apparently once complained about a hotel room because it was "snide with ants".

Although "snide" is commonly used to mean "mocking" or "malicious", in the Staffordshire dialect it means "overrun" or "full of".

The common meaning derives from the Middle English word "snithen" ("to cut") but whether the Staffordshire dialect meaning has the same source in not clear.