catching Tom's new hobby is catching and moving live moles.
infectious The infectious case was isolated from other patients.
pestilent You shouted. You have been pestilent. But so far, you have not been a traitor.
annoying When one is sick, visitors can be rather annoying.
teasing If you keep teasing him, he’ll lose his patience.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

By length

5 letters: dirty², pesky²
6 letters: septic², vexing², plaguy
7 letters: teasing², noxious², galling², irksome², noisome, baneful
8 letters: annoying³, catching², epidemic⁴, virulent³, mephitic, morbific
9 letters: unhealthy³, poisonous³, vexatious³, pestilent
10 letters: infectious³, contagious³, irritating⁴, pernicious³, bothersome³, corruptive³, nettlesome³, perversive
11 letters: troublesome³, unwholesome, unhealthful³
12 letters: pestilential, insalubrious

The small number after each word is its number of syllables (dirty² = 2 syllables).