Practically speaking, I don't think it will work.

I speak highly of her talent and dedication.

Frankly speaking, I don't think it's a good idea.

Roughly speaking, the project will take about six months to complete.

Generally speaking, it is better to be prepared for any situation.

The captain used the speaking tube to communicate with the crew.

He is, so to speak, the king of the office.

Never speak ill of others.

Speaking of which, have you seen the new movie yet?

I always speak my mind, no matter what.