like or characteristic of a rowdy.
disposed to or characterized by rowdyism.

Origin of rowdyish

An Americanism dating back to 1835–45; rowdy + -ish1
Related formsrow·dy·ish·ly, adverbrow·dy·ish·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rowdyish

Historical Examples of rowdyish