How to Use on their best behavior in a Sentence

on their best behavior

phrase
  • Expect everyone to be on their best behavior on the field and the sidelines.
    Gary Klein, Los Angeles Times, 26 Aug. 2022
  • And then there were my bohemian artist parents, a pair of bomb throwers even on their best behavior.
    Daisy Rockwell, Vogue, 27 Nov. 2025
  • There's a slight risk of rain later this week, so drivers will have to be on their best behavior as the season begins.
    Justin Gest, Newsweek, 11 Feb. 2025
  • It's often said that the day of an interview is when everyone is on their best behavior.
    Expert Panel®, Forbes, 16 Aug. 2022
  • Everyone’s coming into them on their best behavior and even feuds are parked at the entrance for a while.
    Lizzie Lanuza, StyleCaster, 20 Nov. 2025
  • There’s cordiality and decorum at these events; anyone can be on their best behavior for a day or so.
    Julia Cho, New York Times, 21 May 2024
  • Plus, most potential partners are on their best behavior early on.
    Christina Pérez, Vogue, 12 Apr. 2025
  • The gesture was simple but encouraged them to always be on their best behavior.
    Tereza Shkurtaj, PEOPLE, 18 Oct. 2025
  • 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
  • Snoop Dogg's grandkids are going to have to be on their best behavior this holiday season!
    Hannah Sacks, People.com, 6 Dec. 2024
  • 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
  • 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
  • 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
  • In job interviews, potential employees and managers tend to be on their best behavior.
    Tara Weiss, WSJ, 17 Jan. 2023
  • 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
  • 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
  • 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
  • There is a difference between letting the best in people express itself and keeping people on their best behavior.
    James Poniewozik, New York Times, 24 May 2024
  • 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
  • Kang-hee, played by Lee Se-young, grew up in the motel where her father often forgot to pay the bills and the guests are rarely on their best behavior.
    Joan MacDonald, Forbes, 14 Jan. 2025
  • After that incident, the team’s coaching staff brought the groups together to tell them to cool it, and everyone was on their best behavior after that.
    Josh Kendall, The Athletic, 7 Aug. 2024
  • 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
  • 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
  • At the beginning of a relationship, everyone is usually on their best behavior, which can make this valuable green flag hard to spot early on.
    Baya Voce, CNBC, 27 Nov. 2025
  • Days before the wedding, Bones joked that Stanley and Eller would need to be on their best behavior to be included in the special day.
    Tamara Palmer, Peoplemag, 26 May 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
  • Polk County Sheriff Grady Judd said tourists are welcome in the county, but they are expected to be on their best behavior.
    Elizabeth Pritchett, FOXNews.com, 5 Aug. 2025
  • 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
  • Either Silvia and Guojun were not aware that parents under supervision must be on their best behavior—out of love for their children and fear of the state—or this was their best behavior.
    Ava Kofman, New Yorker, 9 Feb. 2026
  • Even on their best behavior, players would occasionally disappear for several days, then return to Muni for batting practice.
    Laurence Miedema, Mercury News, 1 Apr. 2025

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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