hastening

verb

1. (form-of, gerund, participle, present)present participle and gerund of hasten

noun

1. The act of speeding up; a growing faster.

   “Miss D. had found that regular blinking, or a loud-ticking watch, or horizontal lines or marks on the ground, etc., similarly served to pace her, and to prevent the incontinent hastenings and retardations which otherwise marred her ambulation.”

   “The secret seems to be a very precise control of the subtle slackenings and hastenings of tempo that are essential to Scriabin's idiom[…]”