1. (noun) extreme dullness; lacking spirit or interest

• boringness
• insipidity
• insipidness

1. (noun) extreme dullness; lacking spirit or interest

• dullness

1. (noun) extreme dullness; lacking spirit or interest

• blue
• dark
• dingy
• disconsolate
• dismal
• drab
• drear
• dreary
• gloomy
• grim
• sorry
• boring
• deadening
• dull
• ho-hum
• irksome
• slow
• tedious
• tiresome
• wearisome
• drab
• dreary
• insipid
• jejune