People who are disciplined are either rule-followers or they are controlled and efficient. A disciplined runner who's training for a marathon has a regular, daily exercise routine.

Your disciplined puppy might be the star of her obedience class, the very best at "sit" and "stay." And your cousin who speaks six languages is also disciplined — she studies, reads, and practices speaking for hours every day. Disciplined comes from the noun discipline, which has come to mean "punishment," but is rooted in the Latin word disciplina, "teaching or knowledge," and also "military discipline."

Definitions of disciplined
  1. adjective
    obeying the rules
    restrained or managed or kept within certain bounds
  2. adjective
    trained mentally or physically by instruction or exercise
    “the beautiful coordination of his disciplined muscles”
    “a disciplined mind”
    shaped or conditioned or disciplined by training; often used as a combining form
Word Family

Test prep from the experts

Boost your test score with programs developed by Vocabulary.com’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week


  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week