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Definition

Attentive, active, busy or alert.

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In Context

  • "I keep my students on their toes with pop quizzes."
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Related Idioms

k

keep someone on their toes

To keep someone attentive, active, busy or alert.

 o

on the ball

Alert, active, or attentive; on top of things.

 b

busy as a bee

Very active; working constantly.

 m

morning person

A person who wakes up, without difficulty, early each morning and is a…
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