To follow up a verbal message with a statement of further clarity to ensure that the message's receiver understands the sender's true intenion. A sufface is normally the sign of a sender being insecure, paranoid, neurotic, obsessive-compulsive, and/or frightened to death of offending someone. An antonym to preface.
As a sufface to our conversation last night where I told you your chocolate chip cookies were the best in town, please understand that I meant any town - not just the town in which we live.
by kpvs311 April 11, 2011