1.   Her kinship with the respected Goldie apparently quells any nagging doubts.

2.   I still had a nagging doubt that there might be something seriously wrong.

3.   Inside him there was a little nagging doubt.

4.   Only a handful of nagging doubts remained, locked at the back of his mind and these soon seemed hazy and foolish.

5.   That nagging doubt, the feeling that something was missing in the woman she was supposed to be.

6.   The post-war years brought nagging doubts for Mary, when she was not surrounded by her now four healthy children.

7.   There are still some nagging doubts about the future of the company, though for now it is doing well.

8.   There was still a nagging doubt in the back of her mind.

9.   This is always a nagging doubt about any survey-style research.