This is an irregular verb. It is a model verb.
PresentPresente
Me muero de hambre después del partido.
I'm starving after the game.
PreteritePretérito indefinido
Mi planta murió por falta de agua.
My plant died from lack of water.
ImperfectPretérito imperfecto
Nos moríamos de risa con sus chistes.
We were dying of laughter at his jokes.