noun
A fall or landing on one's face, especially in a clumsy or ungraceful manner
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The athlete tripped and performed a faceplant on the track during the race.
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I saw John trying to show off his skateboarding skills but ended up doing a faceplant instead.
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She attempted to do a handstand but ended up doing a faceplant on the grass.
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The new employee's presentation was a complete faceplant in front of the entire team.