right up (one's) alley
right up (one's) alley
Ideally suited to one's interests. Anna loves watching movies, so I'm sure she'll go to the film festival with you—that's right up her alley. This course seemed right up my alley when I signed up for it, but it ended up being dreadfully boring.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
right up one's alley
Also, 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] Also see cup of tea.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
right up your alleymainly AMERICAN
If something is right up your alley, it is the kind of thing you like or know about. This should be right up my alley but, despite the film's special effects, I found it rather boring. I thought this little problem would be right up your alley. Note: You can also say that something is right down your alley. I'll need whatever information you can turn up within the week. This case seems right down your alley. Note: The usual British expression is right up your street.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
(right) up one’s alley
mod. exactly one’s kind of thing; exactly what one is best equipped to do. It’s not exactly up my alley, but I’ll try it.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
right up one's alley, to be
To be in one’s particular specialty or to one’s precise taste. The word alley has long been used for one’s special province; Francis Bacon so used it in his essay Of Cunning (1612): “Such men . . . are good but in their own Alley.” Up one’s alley, however, is a twentieth-century turn of phrase. Margaret Carpenter used it in her novel Experiment Perilous (1943): “It isn’t up my alley at all.” See also not my cup of tea.
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer