misplace (one's) trust
To put one's trust (in someone or something) only to be betrayed, let down, or disappointed. I thought we were hiring a motivated team player who was willing to work hard for us, but it seems that I misplaced my trust. Millions of people misplaced their trust in the investment firm, only to have their life savings wiped away in the span of a few days after it used their investments to try to manipulate the market.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
misplace one's trust (in someone)
to put trust in the wrong person; to put trust in someone who does not deserve it. The writer misplaced his trust in his editor. The voters misplaced their trust in the corrupt politician.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.