Difficult substance Synonyms

Definitions for Difficult


  • (adjective) requiring considerable physical or mental effort
  • (adjective) requiring exceptional skill or caution in performance or handling
  • (adjective) not easy ; requiring great physical or mental effort to accomplish or comprehend or endure

Definitions for Substance


  • (noun) the basic elements from which something can be developed
  • (noun) the quality or qualities that make a thing what it is
  • (noun) the total of one's money and property