Worried people are likelier to be vigilant people, alert to a troubling physical symptom or a loss of some faculty that overly optimistic people might dismiss.
That is impossible. My dad is the happiest guy on earth. It probably just sounded like he was crying. Have you heard the noise he makes when he gets out of a chair?
Mr. Moffat was a fat, jolly old gentleman, who knew her father, and Mrs. Moffat, a fat, jolly old lady, who took as great a fancy to Meg as her daughter had done.