“What did you do this weekend?” “I worked in the yard, 'mostly'.” [=I spent most of my time working in the yard]
The people at the concert were 'mostly' older people. [=most of the people were older people]
He gets around 'mostly' [='mainly, chiefly'] by car. [=he usually uses a car to get around]
(..) "When." Whoa! This is the biggest house I've ever seen! It's the Palace of Versailles, home of Marie Antoinette. You know, she was mostly famous for one thing. Cake! I love cake so much. Marie Antoinette sure likes cake, Mr. Peabody. (..)2014 Mr. Peabody & Sherman