Presentate
Instead of present, you say presentate. I used to say this so often and always get corrected on it by my parents.

Requellium
The feeling of complete peace and silence when you are alone.

Lappsed
When you are caught in between the world of dreaming and complete darkness.

Usless
I know this word already exists, but I think they should make it a synonym for snow day.

Cololard
That feeling when you realize how acute the colors around you and the detail in some objects are like (Maybe its only me).

Sadess
When you are super stressed and/or sad about something and feel as though you could fall apart at any moment.

Pryaidis