Main Entry:

pes·ti·len·tial

Pronunciation:

\ˌpes-tə-ˈlen(t)-shəl\

Function:

adjective

Date:

14th century

1 a: causing or tending to cause pestilence : deadly b: of or relating to pestilence2: morally harmful : pernicious3: giving rise to vexation or annoyance : irritating

— pes·ti·len·tial·ly \-ˈlen(t)-sh(ə-)lē\ adverb