The term "dilly-dallyer" refers to someone who wastes time or procrastinates. There are several synonyms for this word that can be used interchangeably such as a "waster," "loafer," or "slacker." Another term that can be used is "procrastinator," which refers to someone who delays or postpones their work. A "dawdler" is someone who moves slowly or lingers unnecessarily, while an "idle person" is someone who is not actively engaged in any work. A "delayer" or "laggard" is someone who falls behind schedule or progresses slowly. All of these words can be used to describe someone who engages in procrastination or delays tasks unnecessarily.