subject to later alteration; temporary or conditional

a postage stamp surcharged during an emergency to alter the stamp's denomination or significance until a new or regular issue is printed

of, designating, or relating to the unofficial factions of the IRA and SinnFéin that became increasingly dominant following a split in 1969. The Provisional movement remained committed to a policy of terrorism until its ceasefires of the mid-1990s

a member of the Provisional IRA or Sinn Féin