Antonyms for the word "was indolent" could include a variety of terms that convey the opposite meanings. A few possible antonyms might include active, diligent, energetic, hardworking, industrious, motivated, productive, and efficient. Each of these words suggests a sense of vigorous effort, productivity, or drive, in contrast to the idleness or lack of activity implied by indolence. Some synonyms may also offer contrasting shades of meaning, such as ambitious, driven, zealous, or dedicated. By contrasting indolence with its opposite traits and qualities, we can better understand the importance of motivation and action in achieving our goals and leading fulfilling lives.