varmint

Dialectal form of vermin, derived from Latin vermis (“worm”), c. 1530–1540s.[1]

Perhaps influenced by Latin vargus (“bandit, outlaw, scoundrel”), though the pronunciation in /ɑː(ɹ)/ is more likely due to the same lowering of /ɛr/ > /ar/ found in carve < Middle English kerven and starve < Middle English sterven. The final syllable is probably altered after -ment; compare parchment < Middle English parchemyn.[2]

• (Received Pronunciation) IPA^(key): /ˈvɑːmɪnt/
• (General American) IPA^(key): /ˈvɑɹmɪnt/

varmint (plural varmints)

1. A pestering animal such as one that kills or harasses a farmer's livestock or crops.
2. (by extension) An obnoxious person or troublemaker.

• varminter

• vermin on Wikipedia.Wikipedia