It is definitely not a question we should treat lightly.

The Chancellor was not a man to be treated lightly, ever.

I never heard of a sacrifice being treated so lightly.

But, for the most part, it is treated lightly by the authorities.

But your behavior at the party last night cannot be treated lightly!

Your people were not a subject to be treated lightly among us.

Do you believe that civil disorder and violence should be treated lightly?

And in the 1990s the prospect of cheap oil for a while was not something to treat lightly.

I will apologize to him for having treated his warning so lightly.

This concern is therefore well grounded and should not be treated lightly.