
• (n.) A French fop or dandy of the time of the Directory; hence, any fop.
Found on
http://thinkexist.com/dictionary/meaning/incroyable/
In`croy`a'ble noun [ French, lit., incredible.] A French fop or dandy of the time of the Directory; hence, any fop. » The name is said to have been given in allusion not only to the extravagant dress, but also to the frequent use of the phrase '
C'est vraiment incroyable ' (That is real...
Found on
http://www.encyclo.co.uk/webster/I/39

The incroyable was a French foppish male fashion of the period 1795 to 1799 characterised by extremes of dress, including coats with very neat waists and over-large lapels worn with a bicorn hat and a bulky cravat.
Found on
http://www.probertencyclopaedia.com/browse/PI.HTM
No exact match found.