(right) up (one's) alley(redirected from right up their 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.
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.
up one's alley
see under right up one's alley.
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.
up (one's) alleyInformal
Compatible with one's interests or qualifications: an assignment that is right up your alley.