Mostest; meaning more than the word more.
Him; I love you
Me;I love you too
Him; I love you more
Me; I love you the mostest
Mostest: To love someone more than anything that exists or has ever existed. This is more than most and cannot be beaten, under any circumstances, especially by the non-existent words "mostestest" and "mostestestest"
Nereyda: I love you.
Lukas: I love you mostest.
Nereyda: Nooooo. I must accept my defeat. You really do love me mostest baby
Even more than most. The maximum amount of anything. Many believe it to not be a word, but it still means a lot.
Girl: I love you more.
Boy: I love you most.
Girl: I love you mostest.
Boy: That's not even a word!!!
Girl: It is if I say it is!
A word that can be used to express that something is not just greater than some, but greater than most
"I love you"
"I love you mostest"
"That's not a word"
"Fuck you"
When your arguing with your girlfriend and she says mostest isnt a word so you add it to the dictionary out of pettyness