aplomb
noun
[ əˈplɒm ]
• self-confidence or assurance, especially when in a demanding situation.
• "Diana passed the test with aplomb"
Similar:
poise,
self-assurance,
assurance,
self-possession,
self-confidence,
calmness,
composure,
collectedness,
presence of mind,
level-headedness,
sangfroid,
equilibrium,
equanimity,
nerve,
nonchalance,
savoir faire,
savoir vivre,
cool,
unflappability,
Opposite:
gaucheness,
Origin:
late 18th century (in the sense ‘perpendicularity, steadiness’): from French, from à plomb ‘according to a plumb line’.