1. He is too full.
2. He is overeating.
3. He is overeaten.
(Are the three the same in meaning?)
No. The first and second are grammatically correct, but don't mean the same thing.
The third would be correct if you change "is" to "has."
2. He is overeating.
3. He is overeaten.
(Are the three the same in meaning?)
The third would be correct if you change "is" to "has."