What are the antonyms for UNPROFITABLE?

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Usage Examples for UNPROFITABLE

  1. What we want is a good lamp average and no unprofitable customer. - "Edison, His Life and Inventions" by Frank Lewis Dyer and Thomas Commerford Martin
  2. This fact is extremely important, because it promises to make a much larger part of the beds available than would be the case if they continued to plunge downward at a high angle, since in that case they would soon attain a depth at which mining would be impossible, because the heat would be too great, and probably unprofitable also, because the cost of raising the ore would be extremely heavy. - "Impressions of South Africa" by James Bryce