In the forward section, as of an airplane or theater. For example, We'd like two seats as far up front as possible. [First half of 1900s]
Paid in advance, as in We need at least half of the money for the production up front. [Colloquial; c. 1930]
Candid, direct, as in Now tell me straight up front what you think of this outfit. [Second half of 1900s]
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.