pest (n.)
- affliction
- aggravation
- annoyance
- annoyer
- badgerer
- bane
- bedevilment
- blast
- blight
- bore
- bother
- botheration
- bugbear
- bully
- burden
- calamity
- cancer
- canker
- curse
- death
- destruction
- devilment
- difficulty
- disease
- downer
- drag
- drip
- epidemic
- evil
- exasperation
- fungus
- gadfly
- grievance
- harasser
- harassment
- harm
- harrier
- headache
- heckler
- humdrum
- infliction
- irritant
- mildew
- mold
- molestation
- moth
- murrain
- must
- nag
- nemesis
- nudnik
- nuisance
- pandemic
- persecution
- persecutor
- pesterer
- pesthole
- pestilence
- pill
- plague
- problem
- rot
- rust
- sadist
- scourge
- smut
- tease
- teaser
- thorn
- torment
- tormentor
- trial
- trouble
- tuberculosis
- twaddler
- vexation
- visitation
- woe
- worm
- worriment
- worry
