1. Someone with a habitually sullen or gloomy expression
   - sourpuss, gloomy Gus, pouter

Type of: persona non grata, unwelcome person

• unageing
• unaggressive
• unaging
• unagitated
• unai
• unaided
• unaired
• unairworthy
• unalarming
• unalert
• unalienable
• unaligned
• unalike
• unalloyed
• unalterability
• unalterable
• unalterably
• unaltered
• unambiguity
• unambiguous
• unambiguously
• unambitious
• unambitiously
• unamended
• unamusing