Suspensive /(?)/

Sus·pen·sive

Suspensive

a.
  1. Tending to suspend, or to keep in suspense; causing interruption or delay; uncertain; doubtful.
    The provisional and suspensive attitude.
    — J. Morley.

Phrases & Compounds
Suspensive condition
a condition precedent, or a condition without the performance of which the contract can not be completed.