If you mean really as in very, i.e. He is really stupid, the you say tres.
If you mean really as in "Is that true?" or "Oh, really?", then you say c'est vrai?
'really' in french is 'vraiment'
Not really = pas vraiment
vraiment
Ja ne.
beaucoup facile.
Je veux vraiment apprendre le français " i really want to learn french "
Je désire beaucoup
vraiment grand / grande
mon despite
Translation: Vraiment, merci. You can also say "Vachement, tu m'as sauvé" which is French slang for "You really saved me there."
There really isn't. You would say more of "Mon cherie", which is "my darling".
Yes I heard doctors say french cheese is best for them really.