thin out

What was at first a trickle became a stream and the crowds outside began to thin out.

“So he thinks, as the Russian ranks are thinned out by Ukraine, what a brilliant idea - why not let North Koreans do some of the fighting?”

The British national treasure made no conscious decision to stop theater but thinned out her commitments after her breast cancer diagnosis.

Playing on Trump’s crowd-size obsession, she invited viewers to attend a Trump rally, telling them they would see the crowds thinning out early as bored spectators headed for the doors.

But when times get tough and the money thins out, a golfer may feel that a hole in his pocket is the only thing their caddie is providing.