agresser

Agresser means to attack or assault someone, physically or verbally — mugging, assault, or a hostile verbal attack (se sentir agressé par une remarque). It's common in news reporting and everyday conversation about conflict or crime.

• Elle s'est fait agresser en pleine rue hier soir. — She was mugged in the street last night.
• Il s'est senti agressé par le ton de la question. — He felt attacked by the tone of the question.
• Le chien a agressé un passant sans raison apparente. — The dog attacked a passerby with no apparent reason.

Learners use agresser for any kind of confrontation, including simple disagreement — it specifically implies a hostile, unprovoked attack (physical or a genuinely aggressive verbal one), not ordinary arguing or criticism.