What are the antonyms for Frustaneous?

• adj.

  • unprofitable
  • Gainful
  ,
  • beneficial
  ,
  • fruitful
  ,
  • helpful
  ,
  • productive
  ,
  • profitable
  ,
  • successful
  ,
  • useful
  ,
  • valuable
  ,
  • working
  ,
  • worthwhile
  .

One antonym for the term "focus groups" is "individual interviews." While focus groups involve a group of people discussing a particular topic, individual interviews involve a one-...