Certain instrument 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 Instrument


  • (noun) a written or printed paper giving information about or proof of something
  • (noun) an article intended for use in work
  • (noun) something used to achieve an end