Ilocano often borrows words from Spanish, and "agresivo" is one of them. It's pronounced the same way as in Spanish, with the emphasis on the second syllable: a-gre-si-bo.
However, there are other, more traditional Ilocano words that convey the idea of being aggressive, depending on the context:
* "Mapang-apektus": This word implies being aggressive in a forceful or domineering way.
* "Mapang-gulo": This word refers to someone who is trouble-making and prone to causing conflict.
* "Mapait": This word can be used to describe someone who is bitter and resentful, and who might act aggressively out of anger.
The best choice depends on the specific meaning you want to convey.