Check out this post from the Libro Editing blog on when to use breach or breech.
I was asked about this one by my lovely friend Linda, a good friend and a super editor, too. It’s sometimes hard to think up new troublesome pairs to write about, so I love it when people suggest them to me, often because they’ve encountered someone else confusing them, sometimes for themselves (it’s the former in Linda’s case).
To breach something (the verb) means to make a hole in it OR to break something like an agreement or a law, or simply a code of conduct. A breach (the noun) is the result of someone breaching something: it’s the act of breaking an agreement or a law (a breach of conduct) or a gap or hole in a wall or other barrier. “By wearing jeans in the dining room, he breached the club’s formal dress policy”. It’s often used in a military sense, but in a general one, too.
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