pestiferous.

1. Causing or carrying pestilence or disease.

2. Causing persistent annoyance or trouble.

Use it for

Words that belong together

• pestiferous air
• pestiferous insects

On the page

The old account blamed the marsh’s pestiferous air for the fever.

They regarded the pestiferous insects as a danger to the settlement.

Usage notes

Primary category: horror. Forms: Normally non-gradable in the disease classification; degree comparisons suit the troublesome sense. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.