cause (one) qualms
To cause one to feel some or certain hesitations, apprehensions, uneasiness, or pangs of conscience (about something or someone). Lying always causes me qualms, so I doubt I'll be able to tell my boss that I'm sick just to get a long weekend. I thought Jonathan's promotion was a done deal, but his latest interview seems to have caused the board of directors some qualms.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
(about someone or something) Go to qualms (about someone or something).
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.