Spell check with spelling suggestions???

Hi I am looking for a way to spell check my posts without having to use an external editor. I know wordpress has one built one but it doesn’t give suggestions. I am looking for a way to get suggestions to. I tried using external editors but the formatting just kept getting messed up and I got tired of all that extra editing. Anyways if anybody knows of a way to do that either in wordpress or firefox I would appreciate it thanks.