Mix
stir
Sear, stir, spur, slur.
move
Either you need a word that's not English or the starting letter is wrong. There are many words for prison, but the ones with four letters is jail, brig, or the slang stir.
rise
re-up
bind
Fill
Grew...hello!
Envy Is A 4-Letter Word
4 letter word for final
Salt is a 4 letter word for seasoning.