She'd kept him on the phone for a decent interval.

If you want to give something in return, it'll need to be after a decent interval.

Couldn't he wait a couple of days - a decent interval?

They are bought to look good for a decent interval of time.

But with proper management, she could last for a decent interval.

After a decent interval she pulled out her own pipe.

The mushrooms are so hot you need to wait a decent interval for them to cool.

But there needs to be more of a decent interval.

I waited a decent interval and then crossed the street.

Two or three a year is about right, spaced at decent intervals.