Englishfor English speakers
flutter
Verb
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If something flutters, it moves unsteadily quickly right and left or up and down, often because of wind.
She was very sleepy, but from time to time, her eyes fluttered open.
The leaves fluttered down from the trees and around the house.
Three bright flags fluttered in the wind.
The wind set the leaves of the tree fluttering.
Leaves flutter when the wind blows.
A candle flame will flutter if the wind blows.
flutter
Noun
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A flutter is a quick movement up and down or left and right.
—
A flutter is the sound of this movement.
idler
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noun
(= bum)
person who does no work
a lazy bum