Mostest. when you love someone so much that you don't care about spelling.
Hazel:omg I love you so much
Me: Omg I LOVE YOU THE MOSTEST
1-I love the habs the most
2-Nah I love em more in fact I love em the mostest
When you and your partner are in the middle of an I love you war bring up the word mostest because it means more than most and its almost like "infinity and beyond" but slightly bigger
BABY I LOVE YOU MOSTEST LET ME WIN
When you or your partner argue you about who loves who more bring up the word mostest becaust it tops almost anything just like hearing the term to "Infinity and beyond" which is considered infinite and nothing beats that
Baby I love you mostest so let me win the I love you war