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To be certain or confident (about something). Usually used as an imperative. Please rest assured that we are doing everything in our power to make your grandmother comfortable here. Every member of our team has over 20 years of experience, so you can rest assured that your investment portfolio is in good hands.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
to be assured; to be certain. Rest assured that you'll receive the best of care. Please rest assured that we will do everything possible to help.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
You can be sure, as in Rest assured that the police will recover your diamonds. This expression uses assured in the sense of "certain" or "confident," a usage dating from the early 1500s.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
rest asˈsured (that...)(formal) be completely certain or confident that...: You can rest assured that we will do everything we can to get your money back.
Farlex Partner Idioms Dictionary © Farlex 2017