animadverter
/ˌænɪmædvɛrtər/Definitions
1. noun
A person or thing that gives rise to a complaint or criticism.
“The new policy was met with disapproval from several animadverters who felt it unfairly targeted certain groups.”
2. verb
To give rise to a complaint or criticism.
“The company’s decision to lay off employees animadverted a lot of negative publicity.”