To treat someone very unfairly or to exploit them for one's own gain.
"His own business partner messed him over by taking the clients and starting a rival firm."
To treat someone very badly, exploit them, or cause them serious harm through dishonesty.
To hurt someone badly by being unfair or dishonest to them.
2 meanings, ordered from most common to least. Color-coded by CEFR level.
To treat someone very unfairly or to exploit them for one's own gain.
"His own business partner messed him over by taking the clients and starting a rival firm."
To cause serious emotional or psychological harm to someone.
"Growing up in that environment really messed her over — she struggled for years afterwards."
To make a mess all over someone — idiomatically meaning to ruin their situation through deliberate bad treatment.
To hurt someone badly by being unfair or dishonest to them.
Chiefly American English. Stronger in tone than 'mess around'; implies real harm done to a person. Common in African American Vernacular English (AAVE) and urban American informal speech.
Natural word combinations native speakers use most often.
The five tense forms you'll use most often.
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