IPA: /ˈdɪsɪplɪn/
KK: /ˈdɪsəplɪn/
A field of study or a branch of knowledge, often involving specific rules or methods to maintain order and obedience.
She chose biology as her discipline in college.
To train someone to follow rules or to control their behavior, often through punishment or instruction.
The coach had to discipline the players to ensure they followed the team's rules.
Past: disciplined
Past Participle: disciplined
Discipline → It is formed from "discipulus" (meaning student or learner) and the suffix "-ine" (indicating a quality or condition). The word originally referred to the condition or quality of being a student, which evolved to mean training or control over behavior.
Think of a 'student' ('discipulus') who is learning and being trained — that's why discipline means training or control over behavior.