not the same as another person or thing, or not the same as beforeI tried on lots of different hats.
Her new glasses make her look completely different.
different from: What makes him different from the rest of the students?
different to: American English is slightly different to British English.
different than: Please note that your results may look vastly different than mine.
different in: The two cars are different in shape.
significantly/markedly/radically/vastly different: The other doctor’s attitude was vastly different.
slightly/somewhat/subtly different: three subtly different styles of writing