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1.
Pertaining to current fashion, trendy, stylish, of good taste. Used moreso in European countries than others. It is slighly old fashioned.
"I must say, my good sir, that jacket is quite modish."
by Orange Jellybean March 08, 2009
 
2.
1. (adj.) - Typically referring to the prevailing trend in the fashion industry.
That shirt is so modish!
by deja_vu95 May 15, 2006