1 [noncount] : the act or result of making a condition, injury, etc., worse : the act or result of aggravating something
▪ trying to avoid the aggravation of an existing back problem2 informal : something that annoys or bothers someone : something that aggravates someone [noncount] ▪ The weather was a source of aggravation for us. [=we were annoyed by the weather] ▪ I don't need all this aggravation. ▪ This car has caused me nothing but aggravation. ▪ Many talented people now feel that a career in politics isn't worth all the aggravation. [count] ▪ I don't need all these aggravations.
▪ trying to avoid the aggravation of an existing back problem