(~s)
If you have ~s about something that is being suggested or done, you feel that it is not quite right, and are worried that it may have unwanted results.
She had some ~s about what she was about to do...
N-VAR
(~s)
If you have ~s about something that is being suggested or done, you feel that it is not quite right, and are worried that it may have unwanted results.
She had some ~s about what she was about to do...
N-VAR
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012