pestiferous

/pɛˈstɪfərəs/
adjective
  1. Causing trouble, annoyance, or harm; bothersome.
    • The city council is trying to control the pestiferous rats in the subway.
    • The pestiferous weeds took over the entire garden in just a week.
    • My pestiferous cousin kept interrupting my video call.
  2. Carrying or spreading disease; infected.
    • They quarantined the pestiferous livestock to protect the rest of the farm.
    • The doctor warned that the pestiferous water supply could cause an outbreak.
    • In medieval times, pestiferous rats spread the plague through crowded cities.
What does "pestiferous" mean? | whatsthatwordmean | whatsthatwordmean