Sharp practice or sharp dealing is a pejorative phrase to describe sneaky or cunning behavior that is technically within the rules of the law but borders on being unethical.
[1][2] The term has been used by judges in Canada; in one case, a Canadian Construction Board gave an example of "sharp practice" for one party to "take advantage of a clear oversight by the opposite party in a proceeding.
"[3] According to another source, a Canadian court of appeal judgement, judges should not accuse counsel of sharp practice lightly and should generally not make such an accusation based solely on written submissions.
[4] Likewise in R v Badger the Supreme Court of Canada forbade the government from engaging in "sharp dealing" with First Nations in implementing treaties.
This article about Canadian law is a stub.