straggler[noun]Synonyms: laggard, dawdler, lingerer, loiterer, slow coach, slowpoke
 [TahlilGaran] English Synonym Dictionary ▲
 strag‧gler /ˈstræɡlə $ -ər/ 
 noun [countable] a person or animal that is behind the others in a group, because they are moving more slowly: 
 Wait for the stragglers to catch up.
 Wait for the stragglers to catch up.  [TahlilGaran] Dictionary of Contemporary English ▲