- a cardinal rule.
- a safe-deposit box usually requires two keys to open it.
- an example that was fundamental to the argument.
- computers are fundamental to modern industrial structure.
- he dominates play in the paint.
- he hit a jump shot from the top of the key.
- he spoke in a low key.
- His new Mercedes was keyed last night in the parking lot.
- key one's actions to the voters' prevailing attitude.
- some students had stolen the key to the final exam.
- the central cause of the problem.
- the key to development is economic integration.
- they were carrying two keys of heroin.
- We were keyed after the locks were changed in the building.