Ostentation (5)
'ostentation' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eclat that I've seen before include "Loud applause" , "Ostentation" , "Showy effect (Fr.)" , "French social distinction or success" , "Universal approval" .)
(Other definitions for swank that I've seen before include "Boast" , "Show off (colloq.)" , "Pretentious person" .)
'ostentation' is the definition.
(I know that ritz is a type of ostentation)
This is all the clue.
(Other definitions for ritz that I've seen before include "Stylish establishment" , "Upmarket hotel" , "glamour" , "Swiss founder of hotel chain" , "Swiss hotelier, who founded an international chain, d. 1918" .)