adverb
- in a troublesome, annoying, or harmful manner
Usage: formal; rare
Examples
- The mosquitoes buzzed pestiferously around the campsite all night.
- He pestiferously interrupted every meeting with irrelevant questions.
- The weeds grew pestiferously throughout the neglected garden.
- She complained pestiferously about every minor inconvenience.
- The old machinery operated pestiferously, breaking down constantly.