pes·ti·lent 
(pĕstə-lənt)
(pĕstə-lənt)adj.
1.
a. Causing or likely to cause epidemic disease: a pestilent swamp.
b. Infectious or epidemic: a pestilent disease.
c. Archaic Tending to cause death; deadly.
2. Morally or socially harmful; pernicious: pestilent writings.
3. Causing annoyance or disapproval: a pestilent fool.
[Middle English, from Old French, from Latin pestilēns, pestilent-, from pestis, pestilence; see PEST.]
- infrangibly
- infraorder
- infrared
- infrared astronomy
- infrasonic
- infrasound
- infraspecific
- infrastructural
- infrastructure
- infrequence
- infrequency
- infrequent
- infrequently
- infringe
- infringement
- infringer
- infructescence
- in full cry
- in full swing
- in fun
- infundibular
- infundibulate
- infundibuliform
- infundibulum
- infuriate