overtalk means excessive talking.
Etymology
From over- + talk.
noun
- Excessive talking.
- Simultaneous speech or talk which drowns out all other speakers.
verb
- To talk too much.
- To overcome or persuade by talking; talk over.
- To overstate; overexaggerate; talk up to seem greater than what is actual.“[…] and he panted like a young faan in her fust race with the hounds, for he was overtalkin' his strength, and I feered he would die for sartin ef he didn't fetch up a bit and git rested; […]”