As right as rain....
Posted by Pdianek on June 30, 2003
In Reply to: As right as rain.... posted by ESC on June 10, 2003
: : Can anyone explain this one?
: RIGHT AS RAIN - "Definitely correct; just the way it should be. It could just as well be 'right as clouds' or any number of other things, but 'rain' it is, doubtless because of the allure of alliteration. The expression has had heavy work since the late 19th century, but an example from 1909 (in Max Beerbohm's 'Yet Again') has the virtue of offerin two cliches in one sentence: 'He looked.'fit as a fiddle', or 'right as rain'.'" From "The Dictionary of Cliches" by James Rogers (Ballantine Books, New York, 1985).
: To access more discussion, type in "rain" in the archives search.
I read somewhere (ah, that fatal phrase!) that "right" in this context carries the same meaning as "plumb", that is, completely vertical. Falling rain (absent wind) is totally "right". Plus, the alliteration is lovely.