We found one dictionary that defines the word keep someone on his toes:

General (1 matching dictionary)

1. keep someone on his toes: Merriam-Webster

▸ Words similar to keep someone on his toes ▸ Usage examples for keep someone on his toes ▸ Idioms related to keep someone on his toes ▸ Wikipedia articles (New!) ▸ Words that often appear near keep someone on his toes ▸ Rhymes of keep someone on his toes ▸ Invented words related to keep someone on his toes