Iswr

Iswr (pronounced "eye-swear") is an abbreviation used (short for "I swear") in texting to casually express strong agreement or emphasis, similar to "I swear to God" or "swear down" or "honestly". It typically carries less weight and seriousness than the full phrase.

Person 1: "Omg, did you see that new music video? It's incredible!"
Person 2: "Iswr, it's like they can read my mind! Every song is a bop.