nag

Company founder Chris Goss, who introduced a new policy requiring staff work three days in the office rather than two, said he had "a nagging feeling" that remote working has affected the company's bottom line.

By late last Monday morning, they had issued an urgent warning for a “life-threatening & destructive windstorm,” raising nagging questions about the mayor’s priorities and why she did not leave Ghana sooner.

The Capitol riot had been nagging at me too.

It's left a nagging question – could elite sport have a damaging impact on the fertility of female athletes?

It expresses a general anxiety the prompt of which is indefinable, a nagging sense that has no singularly compelling explanation.