What does aplomb mean?
Aplomb is an uncountable noun denoting self-confident composure, particularly the ability to remain calm, poised, and assured in situations that might unsettle others. It is most often used in the phrase 'with aplomb,' as in 'she defused the awkward question with aplomb,' and it appears chiefly in formal or literary registers such as journalism, reviews, and polished prose. The word's connotations are strongly positive: to act with aplomb is not merely to be confident but to display a certain elegance and steadiness while doing so, whether performing on stage, handling criticism, or managing a crisis. The term entered English from French in the early nineteenth century, deriving from the phrase 'à plomb,' meaning 'according to the plumb line' — a builder's tool that hangs perfectly vertical by force of gravity. This origin gives the word a vivid underlying image: someone with aplomb stands as straight and steady as a plumb bob, unmoved by whatever turbulence surrounds them. It remains a favorite of writers seeking a concise way to praise grace under pressure.
nounSelf-confidence and composure, especially in a demanding or challenging situation; assurance of manner.
- Assured self-confidence and composure, especially under pressure or in difficult circumstances.
"She handled the hostile press conference with remarkable aplomb."
"The young cellist performed the demanding concerto with astonishing aplomb."
"When the projector failed mid-presentation, he continued speaking from memory with unflappable aplomb."
Rarely used in the plural; aplomb is almost always treated as an uncountable noun.
"Such aplombs are seldom seen on so young a dancer."
Aplomb literally means 'per the plumb line' — true confidence is being perfectly vertical when everything around you isn't.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of aplomb
Aplomb comes from the French 'aplomb,' meaning 'perpendicularity' or 'assurance,' formed from the phrase 'à plomb' — 'according to the plomb,' or plumb line. The French plomb derives from the Latin 'plumbum,' meaning lead, the metal from which plumb bobs were made. English borrowed the word in the early nineteenth century, first using it to mean perpendicularity before it developed its figurative sense of confident composure, by which the vertical steadiness of the plumb line became a metaphor for personal poise. It shares its ultimate root with words like 'plumb,' 'plumber,' and 'plummet.'
How aplomb is actually used
Aplomb is a somewhat formal or literary word, typically used approvingly and often preceded by 'with.' It carries a connotation of grace under pressure rather than mere confidence, implying polish and self-possession in the face of difficulty.
Easily confused with aplomb
'Plumb' refers to a lead weight used for vertical alignment or functions as an adverb meaning 'exactly,' whereas 'aplomb' means self-assured composure.