on (one's) best behavior

Being very polite or exercising exceptionally good manners. Primarily heard in US. Now, you kids must be on your best behavior for your Auntie this weekend! Good morning, class. I hope everyone was on their best behavior for the substitute teacher yesterday.See also: behavior, on

on one's best behavior

being as polite as possible. When we went out, the children were on their best behavior. I try to be on my best behavior all the time.See also: behavior, on

on one's best behavior

Also, on one's good behavior. Very polite, as in Mother told the children to be on their best behavior during Grandma's visit, or The whole staff were on their good behavior while the client inspected the premises. [Late 1600s] See also: behavior, on

单词	on (one's) best behavior
释义	on (one's) best behavior on (one's) best behavior Being very polite or exercising exceptionally good manners. Primarily heard in US. Now, you kids must be on your best behavior for your Auntie this weekend! Good morning, class. I hope everyone was on their best behavior for the substitute teacher yesterday.See also: behavior, on on one's best behavior being as polite as possible. When we went out, the children were on their best behavior. I try to be on my best behavior all the time.See also: behavior, on on one's best behavior Also, on one's good behavior. Very polite, as in Mother told the children to be on their best behavior during Grandma's visit, or The whole staff were on their good behavior while the client inspected the premises. [Late 1600s] See also: behavior, on
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