Fool :a person who acts unwisely or imprudently, a silly person.Unhappy :not happy.Disappointment :sadness or displeasure caused by the non-fulfillment of one's hopes or expectations.Hardworking :tending to work with energy and commitment, diligent.Diligent :having or showing care and conscientiousness in one's work or duties.Synonym of Diligent is Hardworking.