• businesslike, earnest, grave, serious, severe, sincere, sober, sober-minded, solemn, some, staid, stern, thoughtful
• cutty-stool, foot-stool, footstool, stool
• bona fide, earnestly, gravely, in earnest, severely, sincerely, solemnly, thoughtfully
• earnestness, seriousness, severity, solemnity, staidness, thoughtfulness
• airy, flippant, frivolous
• to pull a long face, to wear a long face