“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]
(..) but trust me on this. You're looking at Scarlet kicking you out of the house... ...and the kids wanting nothing to do with you as a negative, when in fact... - I guess it's mostly negative, isn't it? - Well, yeah. I had no upside for that. Hey! You're getting that big promotion today, right? (..)2009 17 Again