A man who drives fast is a menace to others.
He got the answer by mental arithmetic.
It's very difficult to understand the mentality of people who say such things.
Don't mention it.
Did you mention this to the boss?
He did that out of mercenary motives.
It is a mercy that you did not go.
His life was at the mercy of the king.
We were treated with mercy.
He has his merits.
Their characters just don't mesh.
The late arrival of the train messed up all our plans.
Your room is in a mess. Please tidy it.
I can't find anything on this messy desk.
In poetry the rose is often a metaphor for love.
The gram is a metric unit.
There's no essential difference between a metropolitan and a peasant.
We cooked the pizza in the microwave oven.
They were in the midst of a crisis.
Conversely, you might say that it is ridiculous.