addto
- Toss in
- Expand upon
- Pile on
- Make larger
- Increase by
- Increase, as the pot
- Expand, as a collection
- Build upon
- Build an extension on
- Increase, as a collection: 2 wds
- Buy another item for, as a collection
- Lengthen, as a lead
- Increase, as one's lead
- Include in, as a recipe
- Build up, as a collection
- Acquire more items for, as a collection
- Build on