How to Use on their best behavior in a Sentence

on their best behavior

idiom
  • Both of them are not on their best behavior with each other.
    Krystie Lee Yandoli, Rolling Stone, 27 June 2023
  • Do smart-car drivers need to be on their best behavior?
    David Beard, Car and Driver, 6 Sep. 2022
  • Expect everyone to be on their best behavior on the field and the sidelines.
    Gary Klein, Los Angeles Times, 26 Aug. 2022
  • No doubt kids will be on their best behavior in the days leading up to St. Nicholas Day after being threatened with something like that.
    Sucheta Rawal, Travel + Leisure, 29 Oct. 2023
  • The dogs, some of whom were official therapy dogs like Spencer, were on their best behavior, and obliged the many photo requests.
    Talya Minsberg, New York Times, 16 Apr. 2023
  • It's often said that the day of an interview is when everyone is on their best behavior.
    Expert Panel®, Forbes, 16 Aug. 2022
  • By that point, coaches gathered both units and implored them to keep it cordial, and for the second half of practice, both teams were on their best behavior.
    Chris Bumbaca, USA TODAY, 17 Aug. 2023
  • In others, family members have to be on their best behavior to make it through without some kind of contretemps.
    Belinda Luscombe, TIME, 9 Apr. 2024
  • So for now, at least on a recent weeknight in Deptford, parents, grandparents and friends, were on their best behavior.
    Dan Gelston, Anchorage Daily News, 9 June 2023
  • Your kids will be on their best behavior because Santa's watching through the camera, and the rustic look will decorate any home.
    Elizabeth Berry, Woman's Day, 28 Oct. 2022
  • Kwini said the check-ins have also helped put the staff in the right mindset when customers, who aren’t always on their best behavior, give negative feedback.
    Jenn Harriscolumnist, Los Angeles Times, 22 Apr. 2022
  • Otherwise, a chastened Globes were on their best behavior.
    Nate Jones, Vulture, 14 Dec. 2021
  • For option three to happen without triggering a major backlash, Miller would need to be on their best behavior.
    Rebecca Rubin, Variety, 2 June 2022
  • Matthew Comenitz, the school’s assistant principal, said the Calming Corner has been so popular that students will be on their best behavior just to earn time there.
    Katie Mogg, BostonGlobe.com, 22 Dec. 2022
  • Perfect for convincing kids that Santa and his elves are really watching for who is on their best behavior.
    Brittney Morgan, House Beautiful, 15 Nov. 2022
  • Usually the executives at these soirees are on their best behavior, especially when the discussion is on the record, like this one.
    Steven Levy, WIRED, 12 Apr. 2024
  • In an interview, Wilson recalled seeing Hedquist gather men around him and encourage them to be on their best behavior.
    oregonlive, 26 Jan. 2023
  • In job interviews, potential employees and managers tend to be on their best behavior.
    Tara Weiss, WSJ, 17 Jan. 2023
  • Little ones can be reassured that the moving, interactive dinos will be on their best behavior as they are handled by their trainers.
    Kimi Robinson, The Arizona Republic, 26 Jan. 2022
  • In pagan and other pre-Christian traditions, legends arose of mythical beings who emerged during the long nights around the solstice to dole out more extreme punishments to those who weren't on their best behavior.
    Jennifer Borresen, USA Today, 20 Dec. 2022

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'on their best behavior.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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