What are the antonyms for GRATUITOUS?

Synonyms for GRATUITOUS

Usage Examples for GRATUITOUS

  1. The outlined schedule of habits, including some denials and some gratuitous activity, kept her in prime condition- in fact, in improving condition, for six highly satisfactory months. - "Our Nervous Friends Illustrating the Mastery of Nervousness" by Robert S. Carroll
  2. Smith was a sociable and rather a clever man, but according to Leech, occasionally so economical that he would now and then try to get a little gratuitous work out of him. - "John Leech, His Life and Work. Vol. 1" by William Powell Frith