How to Say "aggressiveness" in Spanish
The Spanish word for “aggressiveness” is “dientes” — B2 level.
English → SpanishB2
NounB2
figurative sense, usually in idioms

Examples
Si lo desafías, tienes que estar listo para mostrar los dientes.
If you challenge him, you have to be ready to show some fight (or push back aggressively).
La sierra de mano tiene unos dientes muy afilados.
The handsaw has very sharp teeth (i.e., its cutting parts).
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