Over the span of its 15-year history, ACT UP (the AIDS Coalition to Unleash Power) has helped to transform the world's consciousness about HIV and AIDS, and made activism a vital part of the LGBT political landscape. ACT UP â the AIDS Coalition To Unleash Power â is a diverse, non-partisan group of individuals, united in anger and committed to direct action to end the AIDS crisis. The Act of Supremacy is the name of two different acts passed by the English Parliament, both of which establish the English monarch as the head of the Church of England. act up synonyms, act up pronunciation, act up translation, English dictionary definition of act up. © 2018 Quality Control Music, LLC, under exclusive license to UMG Recordings, Inc.http://vevo.ly/rQTjVi advisors reserve the right to limit each call to one hour or one incident. Swiftpage and its affiliates are in no way liable or responsible for claims made related to the services provided by third-party vendors. There are changes that may be brought into force at a future date. The process of doing or performing something: the act of thinking. How to use act in a sentence. Stonewall 25<1994