’Well — now don’t get upset, Molly, but Augustus Pye had an idea… he’s the Trainee Healer, you know, lovely young chap and very interested in… um… complementary medicine… I mean, some of these old Muggle remedies… well, they’re called stitches, Molly, and they work very well on — on Muggle wounds —’ Mrs Weasley let out an ominous noise somewhere between a shriek and a snarl.
There are no more uses of "complementary" in the book.
Show samples from other sources
John Milton and John Bunyan, standing at widely different angles of experience, make one of the most interesting complementary pairs in all literature.
Robert Huntington Fletcher -- A History of English Literature
Will-making and will-breaking became complementary trades, like armor-making and gun-making.