1. superlative form of gloomy: most dark, dim, or poorly lit
2. superlative form of gloomy: most sad, depressed, or pessimistic

Examples

• The basement was the gloomiest room in the house.
• This is the gloomiest weather we’ve had all winter.
• He felt his gloomiest after hearing the bad news.
• The economic forecast painted the gloomiest picture yet.
• Even on her gloomiest days, she tried to stay positive.
• The gloomiest corner of the forest barely saw sunlight.