WordRel.com

• convenient for use or disposal

  synonym	availableuseable
  derivation	use
  exemplifies	British spelling
  similar	disposable

• fit or ready for use or service

  synonym	functionaloperableoperationaluseable
  derivation	usablenessuse
  exemplifies	British spelling
  similar	serviceable

• capable of being put to use

  synonym	useable
  derivation	usablenessuse
  exemplifies	British spelling
  similar	usefulutile