What does fuming mean?
Fuming is the present participle of the verb 'to fume', and in modern English it overwhelmingly describes a state of intense, simmering anger. A person who is fuming is not shouting or raging openly but seething inwardly — lips pressed tight, jaw set, fury radiating quietly — which gives the word its distinctive flavour of suppressed rage. The figurative sense grew naturally out of a literal one: to fume originally meant to give off smoke, gas, or vapour, and this meaning survives today chiefly in technical contexts such as chemistry, where a substance may be described as fuming when it releases visible fumes. The word traces back through Old French to the Latin 'fumus', meaning smoke, the same root that produced 'fumigate' and, by way of 'through smoke', 'perfume'. Fuming is a vivid, widely understood term for anger on a slow burn, equally at home in everyday complaint and dramatic description.
To give off smoke, fumes, or vapour; figuratively, to be intensely angry while suppressing outward expression.
"She drove home fuming about the way she had been treated."
The figurative sense is now far more common than the literal one.
Visibly seething with anger.
"He gave her a fuming glare before storming out."
The word for 'angry' literally comes from smoke — Latin 'fumus' gave us both 'fumes' you breathe and the fury you stew in.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fuming
Fuming derives from the verb 'fume', which entered Middle English from Old French 'fumer', itself from Latin 'fumare', a derivative of 'fumus' meaning smoke. The literal sense — emitting smoke or vapour — was the original meaning, attested from medieval times. The figurative sense of showing angry agitation developed later, apparently by analogy with a person whose anger smoulders like smoke, and had become well established by the early modern period. The same Latin root underlies 'fumigate', 'fumitory', and 'perfume' (via the notion of smoke passing through), while the plural noun 'fumes' remains common for noxious vapours.
Related word forms
How fuming is actually used
Almost always figurative in modern usage; the literal sense survives mainly in technical or scientific contexts. The figurative sense carries a connotation of anger held in rather than vented — someone fuming is typically silent and tense rather than shouting.
Easily confused with fuming
Fulminating means exploding violently or denouncing thunderously, whereas fuming suggests anger that smoulders beneath the surface rather than bursting out.