Synonyms for Provisional:

adj.

acting (adjective)
ad interim.
circumstantial (adjective)
contingent.
conditional (adjective)
dependent, conditional, tentative, limited, contingent.
experimental (adjective)
probationary.
interim (adjective)
acting.
provisional (adjective)
passing, conditional, ephemeral, temporary, qualified, interim, provisory, transient, limited, provisionary, dependent, pro tem.
provisory (adjective)
provisory.
qualified (adjective)
mitigated, limited, conditional, Stipulated, reserved, tempered, Albeit, exceptional, qualified, notwithstanding.
short-range (adjective)
tactical.
substitute (adjective)
substitute.

n.

inconstant, variable, fleeting, brief, floating, short-lived. impermanent, scheduled, impracticable, aggressive, short-term, workable, temporary, foolproof, short-range, well thought out, tactical, preparatory, interim, strategic, continue. pro tem, ad interim, substitute, acting. provisory. provisional (noun)
provisionary, probationary, tentative, conditional.
temporary (noun)
passing, study at temporary, transient, temporary, ephemeral.

Other synonyms:

provisory, foolproof, impracticable, well thought out, tactical, preparatory, strategic, workable, pro tem, short-term, impermanent, short-range. scheduled, interim. aggressive, ad interim. acting. temporary
transient.
transitory
temporary.

Usage examples for provisional

  1. Many meetings were held, but this only increased the confusion, and though a portion of the Texans set up a provisional government, others continued to act largely on their own responsibility. – For the Liberty of Texas by Edward Stratemeyer
  2. At a conference held shortly after the break with the Republican convention, a provisional committee had been appointed, and on July 8, a call was issued for the " Progressive" convention, which duly assembled on August 5 at Chicago. – Contemporary American History, 1877-1913 by Charles A. Beard