à couper au couteau

== French == === Etymology === Compare English you could cut the atmosphere with a knife. === Pronunciation === IPA(key): /a ku.pe o ku.to/ === Adjective === à couper au couteau (invariable) (informal, figuratively, of a fog) very dense, very thick, thick as a pea soup un brouillard à couper au couteau ― a pea-souper (informal, figuratively, of an accent) very heavy, very thick, very strong; that you could cut with a knife ==== See also ==== purée de pois