English
Etymology
From the customary starting of competitions by making a sweeping downward motion with a cap.
Adverb
en-adv|pos=at the drop of a hat|-
- idiom without any hesitation; instantly
#: We're expected to just do it at the drop of a hat - no notice or anything. It's disgraceful.
See also
at a moment's notice
Category:English prepositional phrases
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