© 2026 Sloth Lingo. Learn easy. Lounge wisely.

pestiferously

Upper-Intermediate (B2)

IPA: /pɛsˈtɪf.ə.rəs.li/

KK: /pɛsˈtɪfərəsli/

adverb
Definition

In a way that causes or spreads disease or harm; harmful or dangerous.


Example

The pests infested the garden pestiferously, damaging the plants.


Conversation
Sloth A
I can't believe how pestiferously those mosquitoes are this summer!
Sloth B
I know, right? They’re everywhere and they just won't leave us alone.
Sloth A
I’ve tried all kinds of repellents, but they keep coming back so pestiferously.
Sloth B
Maybe we should just stay indoors until the weather changes!

Synonyms & Antonyms
Synonyms
harmfully
noxiously
dangerously
Antonyms
beneficially
safely
helpfully
Root Explanation

Pestiferously → It is formed from "pestifer" (from Latin "pestifer", meaning bringing disease) and the adverbial suffix "-ously" (meaning in a manner of). The word "pestiferously" means in a manner that brings disease or harm.

Memory Tip

Think of something that brings disease ('pestifer') and remember that 'pestiferously' describes doing something in a harmful way.

Visually Confused Words
peltiferous
salutiferously
preposterously
petaliferous
esteriferous
Is this page helpful?