ease / simplicity / lightness, brevity

effective

easy / simple, uncomplicated / brief, light, short

(chiefly in mathematics, physics) for simplicity; for the sake of simplicity

proactive, positive, active, constructive

moreover / also / furthermore

敵: enemy; opponent / 趯: the fourth of the Eight Principles of Yong

的: adjectival suffix

besides; furthermore; moreover

effect / (judo) koka, points or the judge call to the points in the match of Japanese martial art of judo. less points to yuko.