- He used a reductio ad absurdum form of logic.
- And I'm not talking about a reductio ad absurdum contest where we use up all the clever tricks in our books to make the code fit into less physical space.
- I come in answer to your ad for a salesman.
- We were told to help ourselves to the food ad lib.
- Problems were solved on an ad hoc basis.
- Insert a want ad, and it may help.