faux pas
nounDefinition of faux pas
: a significant or embarrassing error or mistake : blunder
Long, hot soaks in winter are a classic faux pas, since exposure to extreme heat after having been in the cold can cause small visible blood vessels to appear at the skin's surface. — Elle
especially
: a socially awkward or improper act or remark
Audiences must be supportive and enthusiastic—lots of clapping, no heckling. (And talking on cellphones during the performance is a huge faux pas). — Claudine Ise … when I sauntered into the main dining room for my first breakfast, I realized I was the only person showing his legs. Careless faux pas, or was I being overly sensitive to the local culture? — David Swanson Campaigning last year seemed to convince her that she can venture out alone without making costly faux pas. — Time Magazine It was not until I'd covered about fifty kilometers that I committed my most terrible social faux pas yet: I overtook another cyclist. — Polly Evans