Look up dullness in Wiktionary, the free dictionary.

Dullness may refer to:

In vision

• A lack of perceived brightness
• A lack of perceived colorfulness

In medicine

• A dull sound in response to percussion (medicine)
  • Shifting dullness, a medical sign

In philosophy and religion

• Tamas (philosophy), one of the three tendencies in the Samkhya school of Hindu philosophy
• Thīna, an unwholesome mental factor in Buddhism
• Laya or bying-ba, in the five faults and eight antidotes of Tibetan Buddhism

Other uses

• Dulling, the tendency of a blade to lose sharpness
• Stupidity
• A tendency to cause boredom
• Drowsiness (archaic)

See also

• Dull (disambiguation)
• Dulness, a goddess in The Dunciad
• Dully, a municipality in the canton of Vaud in Switzerland

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