1. (p. pr. & vb. n.) of Quicken.

2. (n.) The act or process of making or of becoming quick.

3. (n.) The first motion of the fetus in the womb felt by the mother, occurring usually about the middle of the term of pregnancy. It has been popularly supposed to be due to the fetus becoming possessed of independent life.

acceleration activating animating animation animative bracing clarification double time double-quick double-quick time drive easing energizing enlivening enlivenment exhilarating exhilaration exhilarative expediting expedition facilitation festination forced march forwarding getaway hastening hurrying impetus invigorating invigoration invigorative life-giving pickup revitalization revival rousing simplification simplifying smoothing speeding speedup step-up stimulating stimulation stimulative streamlining thrust tonic viable vitalization vitalizing vivification vivifying