When two people have an altercation, they're having a heated, angry argument that might turn physical. It's more intense than a disagreement or a quarrel: voices are raised, tempers are flaring, and the situation feels like it could escalate into a fight.

You might see news reports about “an altercation outside a stadium” or hear that two drivers had an altercation after a fender bender. The word suggests conflict that's loud, confrontational, and aggressive. It's not the word for friendly debates or calm discussions that happen to get a little tense. An altercation has real anger behind it.

While an altercation might stay verbal, the word often appears when describing situations where security had to intervene or police were called. It's the kind of conflict where bystanders step back and someone might need to say, “Let's all calm down.”