noun a regulated routine of therapy or exercise designed to promote health or fitness.Calisthenics are part of her daily regimen as she prepares for the competition. See the full entry

noun 1. that which one is legally or morally bound to do or refrain from doing; that which one must do or not do. In many countries, military service is an obligation.You…

adjective courageous, spirited, or chivalrous.The gallant knight set off to rescue his lady. noun a courageous, spirited, or chivalrous man. See the full entry

adjective extremely sharp; able to cut readily and finely.For that job, you’ll need a knife with a keen blade. finely discerning; extremely perceptive; acute.Dogs have a keen sense of smell.With her keen…