To press something firmly so it lies flat against a surface.
"Flatten down the pastry before adding the filling."
To press or push something so that it becomes flat and stays down.
To push something hard so it goes completely flat and doesn't stick up.
2 meanings, ordered from most common to least. Color-coded by CEFR level.
To press something firmly so it lies flat against a surface.
"Flatten down the pastry before adding the filling."
To cause something that is raised or unruly to lie flat.
"He tried to flatten down his hair before the interview but it kept springing back up."
To make flat by applying downward force — transparent and non-idiomatic.
To push something hard so it goes completely flat and doesn't stick up.
Used in practical, everyday contexts such as cooking, crafts, and gardening. Less common than 'flatten out' and tends to emphasize downward pressure.
Natural word combinations native speakers use most often.
The five tense forms you'll use most often.
Listen to native speakers using "flatten down" in real YouTube videos — click a clip to watch it on Looplines.
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