Сязыком . when you feel sad and upset because of a difficult situation you are depressed. the opposite of optimistic is pessimistic. when you don`t know what`s happening or don`t know what to do, you feel c _ _ _ _ _ _ _. when you are looking forward to something you are e _ _ _ _ _ _. when you are unhappy because you are alone you are l _ _ _ _ _. if you are not worried scared or angry you feel c _ _ _.