start on

Verb

start on (third-person singular simple present starts on, present participle starting on, simple past and past participle started on)

1. (informal, transitive) To criticize.
   • Don't start on her about that again!
2. (informal, transitive) To begin using (something); to set about on a task; to be initiated to begin using.
   • We're starting on the long-delayed project soon.
   • They haven't started her on solid foods yet.
3. (informal, transitive) To be instigated to talk about, rant or complain regarding a frequent topic.
   • Don't start me on that again.