When she found out it had to do with selling encyclopedias, her interest flagged.

Liberty's interest flagged, and she wandered off to the toy section.

Meanwhile, his interest in the matter of pens had all at once flagged.

The interest flagged when the drug proved successful and simpler to employ.

It would not be surprising if, after seven years, interest has flagged.

"As he's grown older, his interest in the new has not flagged."

Quincy Jones, too, was briefly interested, but the interest flagged.

Although oil prices have rebounded, they added, his interest in reform has not flagged.

Yet her interest in matters at home never flagged.

But as the trial dragged on, public interest flagged.