nettlesome

adj

Etymology: From nettle + -some.

1. Causing irritation, annoyance, or discomfort; bothersome, irksome.

   “My old car is very nettlesome.”

   “Mackenzie made himself a nettlesome burr under Crook's saddle, irritating the commanding general.”

2. Thorny; difficult to deal with, especially due to being complex or tricky.

   “The task of proving Fermat’s “last” theorem remains nettlesome.”

   “Be careful what you say to him; he's a nettlesome fellow.”