Mucus-Mucous | Commonly Confused Words
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Master confusing words with ease

Mucus vs. Mucous

Mucus

/ˈmjuːkəs/
A thick, slippery substance produced by the body's glands to protect and moisten surfaces

Examples:

The doctor explained how mucus protects our lungs.Seasonal allergies often lead to excess mucus production.Mucus traps dust and microbes entering the nasal cavity.

Synonyms:

Antonyms:

Mucous

A slippery substance produced by membranes in the body, often found in the nose and throat.

Examples:

The snail leaves a mucous trail across the pavement.Mucous membranes line various cavities within the body.During allergies, mucous production can significantly increase.

Synonyms:

Antonyms:

Ways to tell them apart:

etymology
  • Mucus has a u, just like substance, and it refers to the slimy substance itself.
  • Mucous has an o, like condition, and it describes something related to or producing mucus.
  • Remember, mucous as an adjective usually describes membranes, whereas mucus is the noun for the slime.
  • If you can replace the word with slime, use mucus.
  • If you can replace the word with slimy, use mucous.
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