to move faster; to gain speed
to increase the speed of (something)
to move faster; to gain speed
to increase more rapidly
to happen, or to cause (something) to happen at an earlier time
to increase the speed of (something)
to hasten the progress or development of (something)
acceleration noun
accelerative /-rətiv/ adj.
[Latin acceleratus, past part. of accelerare, from ad- + celer swift]