éclat

[ey-klah; French ey-kla] /eɪˈklɑ; French eɪˈkla/
noun
1.
brilliance of success, reputation, etc.:
the éclat of a great achievement.
2.
showy or elaborate display:
a performance of great éclat.
3.
acclamation; acclaim.
Origin
1665-75; < French: splinter, fragment, burst, flash, brilliance, Old French esclat, noun derivative of esclater to burst, break violently, probably < Old Low Franconian *slaitan to split, break (compare Old High German sleizan to tear), a causative of Germanic *slitan; see slit
Can be confused
éclat, élan.
British Dictionary definitions for éclat

éclat

/eɪˈklɑː; French ekla/
noun
1.
brilliant or conspicuous success, effect, etc
2.
showy display; ostentation
3.
social distinction
4.
approval; acclaim; applause
Word Origin
C17: from French, from éclater to burst; related to Old French esclater to splinter, perhaps of Germanic origin; compare slit
Word Origin and History for éclat

eclat

n.

1670s, "showy brilliance," from French éclat "splinter, fragment" (12c.), also "flash of brilliance," from eclater "burst out, splinter," from Old French esclater "smash, shatter into pieces," of uncertain origin, perhaps from a West Germanic word related to slit or to Old High German sleizen "tear to pieces; to split, cleave." Extended sense of "conspicuous success" is first recorded in English in 1741.