Hi Heather, You use "Tout à fait" when you agree with somebody. Like: "yes, you are right", "correct", "absolutely". Here is a link where youbcan look it up if you want too. http://www.yourdictionary.com/tout-a-fait Hope I could help :)

Hello ! There are several uses of "tout à fait". > Before an adjective, it means "completely", "quite"... "Ce que tu dis là est tout à fait juste". "Jean est un homme tout à fait tranquille"... > As an answer to a question, it asserts one's advice more strongly than a simple "yes". "Est-ce que tu es d'accord avec cette proposition ? Tout à fait" (Entirely) Hope this helps !