wast ‧ er /ˈweɪstə $ -ər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ wastage , ↑ waste , ↑ wastefulness , ↑ waster , ↑ wastrel ; adjective : ↑ waste , ↑ wasteful , ↑ wasted , ↑ wasting ; verb : ↑ waste ; adverb : ↑ wastefully ]
1 . British English informal someone who you think will never achieve any success in life:
All her friends are drunks or wasters.
2 . time/money/energy waster someone or something that does not use time etc carefully or well