dawdle vs speed up

dawdle

verb
  • To move or walk lackadaisically. 

  • To spend time idly and unfruitfully; to waste time. 

  • Chiefly followed by away: to spend (time) without haste or purpose. 

noun
  • An act of spending time idly and unfruitfully; a dawdling. 

  • Synonym of dawdler (“a person who dawdles or idles”) 

  • An act of moving or walking lackadaisically, a dawdling; a leisurely or slow walk or other journey. 

speed up

verb
  • To accelerate; to increase speed. 

  • To increase the speed of something; to make something go faster. 

How often have the words dawdle and speed up occurred in a corpus of books? (source: Google Ngram Viewer )