fire

Meaning

1. Excellent, impressive, or highly desirable.
2. Used as a standalone exclamation of approval.

“New jacket is fire.”

Where it came from

Slang use of “fire” to mean excellent traces to Black American vernacular and 1980s hip-hop, where a hot track was “on fire.” It became a general-purpose compliment through rap lyrics and later through emoji shorthand on social media.