fell flat on one's face

Totally bombed publicly

To fall flat on one's face is to fail completely and conspicuously, often after confident expectation of success.

The image is of someone stumbling forward and landing face-first—maximum embarrassment.

The product launch fell flat on its face when nobody showed up.

Also used literally for an actual tumble.

Related

face plant · humiliation · lose face · botch · embarrassment · public humiliation · faceplant · shame · defeat · frustration · misstep · egg on face · downfall · wipeout · crash · crash and burn · epic fail · pratfall

Opposites
SUCCESS vs. FAILURE

fell flat on one's facehit it out of the park

Succeed beyond expectations

nailed it · triumphed · aced it · crushed it · killed it

manner of outcome

fell flat on one's facelanded on one's feet

Recovered after setback

stuck the landing · saved face

Family

falling, fallen, flats, flatly, flatten, flattens, flattened, flattening, flatter

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G