verb | ac·cel·er·ate
  1. a : to advance (the maturity date of a security agreement) so that payment of the debt in full is due immediately — see also acceleration clause

    b : to cause (a future interest in property) to vest by removing the preceding interests (as by failure or premature termination)

    : to enforce an acceleration clause held that the creditor's right to accelerate was suspended —J. J. White and R. S. Summers