- (figuratively, idiomatic, informal, postpositive) Entirely, completely, extremely, to the greatest degree.
- He was stuffed to the tonsils with cream crackers.
- We had both been stuffed up to the tonsils with excellent food.
- They sat there, robed up to the tonsils, and made me feel so below a juvenile delinquent.
- With resentments choking him up to the tonsils.