- 1 to attach a boat to a fixed object with a rope We tied up alongside the quay. We tied the boat up.
- 2 to close something with a knot; to be closed or fastened with a knot to tie up a garbage bag
- 1 to tie somebody’s arms and legs tightly so that they cannot move or escape The gang tied up a security guard.
- 2[usually passive] to keep somebody busy so that they have no time for other things I'm tied up in a meeting until 3.
- 1 to attach an animal to something with a rope, chain, etc. He left his dog tied up to a tree.
- 2[usually passive] to connect or link something to something else Her behaviour is tied up with her feelings of guilt. related noun tie-up
- 3[often passive] to invest money so that it is not easily available for use Most of the capital is tied up in property.
- 4to deal with all the remaining details of something We are hoping to tie up the deal by tomorrow. I went into the office for an hour to tie up any loose ends (= finish remaining small jobs).