He felt a slight uneasy at the abbreviation of his name
The abbreviation USA stands for United states of America
Most common abbreviations used in Verbal and written English communication: * A.S.A.P. - "As soon as possible," used when encouraging someone to respond to a request without delay. * B.Y.O.B. - "Bring your own bottle" is used for parties where guests are expected to bring their own beverages or restaurants that don't sell alcohol. * D.I.Y. - This acronym stands for "do it yourself," which means creating something on your own. It is used for crafts and home repairs. * E.T.A. - This acronym means "estimated time of arrival," and is used as a guess for when one expects to arrive somewhere. * R.S.V.P. - This initialism comes from "Répondez, s'il vous plait," French for "respond, please." It's often used on invitations to parties and special events, and is intended (as it says) to be responded to with a "yes, we will attend," or "no, we will not."