I keep wanting to put an a in this word instead of a second I. But I have a visual image that may help me remember. When you want two boards to stay in place you put a nail in it. If you really want them to stay in place, you defInItly want to put in two nails.

Bad: Definate

Good: definite.  Finite means forever.

definite = two nails to make sure it definite stays in place.

We’ll see if that helps. If you have a way to remember, please feel free to share it.