Slang definitions & phrases for right up one's alley
right up one's alley
Perfect for someone; exactly what someone is best at: Teaching grammar is right up her alley
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
Idioms and Phrases with right up one's alley
right down one's alley. In one's specialty, to one's taste, as in Writing press releases is right up her alley, or He loved opera, so this program of arias was right down his alley. These idioms use alley in the sense of “one's own province,” a usage dating from the early 1600s.
[ First half of 1900s