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Definitions

fog

[fog, fawg] / fɒg, fɔg /
NOUN
heavy mist that reduces visibility
Synonyms
STRONGEST
cloud gloom smog smoke steam vapor
STRONG
effluvium film grease haze miasma murk murkiness nebula obscurity smother soup wisp
WEAK
London fog brume ground clouds pea soup smaze visibility zero-zero
NOUN
mental unclarity
Synonyms
STRONGEST
confusion mist
STRONG
befuddlement blindness daze haze maze obscurity perplexity stupor trance vagueness
WEAK
muddledness muddlement
Antonyms
STRONG
consciousness
WEAK
clearness cognizance understanding
VERB
muddle, obscure
Synonyms
STRONG
addle becloud bedim befuddle bewilder blind blur cloud confuse darken daze dim eclipse mist muddy mystify obfuscate perplex puzzle stupefy
WEAK
steam up
Antonyms
STRONG
clarify clear clear up enlighten explain explicate uncloud

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

AI detection tools were meant to cut through the fog of the information war.

From Barron's • Apr. 2, 2026

The fog of war has stoked a massive surge in the market’s so-called “fear gauge,” the Cboe Volatility Index, or VIX, over the past two months, taking it to levels normally associated with extreme volatility.

From Barron's • Apr. 2, 2026

"The fog of war continues," investment adviser Christopher Dembik of Pictet Asset Management said.

From Barron's • Mar. 31, 2026

Tule fog forms when heat escapes from the ground on clear, calm nights, and moisture in the air condenses into a low-lying mist.

From The Wall Street Journal • Mar. 29, 2026

Suddenly he noticed a trace of fog moving around his feet.

From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.