What does mugginess mean?
Mugginess is a noun meaning the uncomfortable quality of air that is damp, warm, and close, often with a sense of staleness. The term is especially associated with humid weather, although it can also describe a crowded or poorly ventilated room. Its related adjective, muggy, is much more common in everyday use: a person may complain that the afternoon is muggy long before they describe its mugginess. The word can also carry a figurative implication of stuffiness or oppressive heat, especially in descriptions of old buildings and summer weather. Although still fully understandable in American English, mugginess is used somewhat more often in British English. It is a useful word when the focus is specifically on the unpleasant physical sensation produced by a combination of humidity, warmth, and lack of moving air.
nounThe state or quality of being muggy, especially warm, humid, and stifling.
- The state or quality of being warm, humid, and unpleasantly close or stale.
"We opened the windows to escape the mugginess inside the old house."
"The mugginess of the July afternoon made even the short walk to the station feel exhausting."
"She lowered the heating to reduce the mugginess in the cabin."
The plural is grammatically possible but is rarely used because mugginess is normally treated as an uncountable quality.
"The guide describes the mugginesses of the coastal region in winter."
Mugginess captures that heavy, close feeling of a room when the air is too damp and warm to be comfortable.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mugginess come from?
Mugginess was formed in the 19th century from the adjective muggy plus the suffix -ness. The adjective muggy in turn developed from mug, meaning a warm or moist atmosphere, with the added suffix -y. Related forms also occur in several northern European languages, where words for damp, cloudy, or foggy weather share comparable roots.
How mugginess is actually used
Relatively uncommon and chiefly descriptive of weather or indoor air. It is more natural in British English, though understood in US English.
Easily confused with mugginess
A mug is a drinking vessel, whereas mugginess is the damp, stifling quality of the atmosphere.