What are the antonyms for EFFORTLESS?

Synonyms for EFFORTLESS

Usage Examples for EFFORTLESS

  1. They took the hills at a swift, effortless trot, and on the down slopes broke into a hand- gallop; light- hearted, but conscious all the time of the hand on the reins, that was as steel, yet light as a feather upon a tender mouth. - "Back To Billabong" by Mary Grant Bruce
  2. I could hardly believe it, but it was forced upon me, and the blows which I seemed to deliver at the right time in the most effortless of ways, had a terrible effect, my antagonist going down three times to my once. - "Burr Junior" by G. Manville Fenn