Certain jack Synonyms

Definitions for Certain


  • (adjective) known but not named
  • (adjective) having or showing a mind free from doubt
  • (adjective) having been established and usually not subject to change

Definitions for Jack


  • (noun) a piece of cloth with a special design that is used as an emblem or for signaling
  • (noun) an adult male human being
  • (noun) one who operates or navigates a seagoing vessel