swimmer
noun /ˈswɪmə(r)/
  /ˈswɪmər/
 - a person who can swim; a person who is swimming
- a good/strong swimmer
 - They watched the swimmers splashing through the water.
 - a shallow pool for non-swimmers
 
Oxford Collocations Dictionaryadjective- good
 - keen
 - strong
 - …