"forbidden act" is correct and usable in written English.
You can use it to refer to an action that is prohibited or not allowed. For example, "Littering is a forbidden act in this park."
"Breach" is both the forbidden act of crossing the lines and the shadowy agency that punishes those who transgress them.
For a final assignment, I require them to buy a paper from a paper mill, put their name on it, and defend it as their own — surely the most forbidden act in academia.
Two offences are in fact created and defined by the sixth section of the Enforcement Act, both of which consist of a conspiracy with an intent to perpetrate a forbidden act.
(It is not, of course, a sufficient condition: "[I]t does not follow that the Fourth Amendment requires adoption of every proposal that might deter police misconduct". Calandra, 414 U. S., at 350; see also Leon, supra, at 910). To begin with, the value of deterrence depends upon the strength of the incentive to commit the forbidden act.
Is it really necessary to state that men who harass a women who sits outside the intended area … thereby commit a forbidden act and are liable to criminal persecution?" asked Justice Rubinstein, in a landmark ruling back in 2007, after a group of women from the Israel Religious Action Centre (Irac) took the Egged and Dan public bus companies to court.
The idea was that sex for any other reason was somehow a forbidden act.
Where are all the hucksters who used to stand outside promising Nirvana and shaken booty, forbidden acts and creamy thighs?
But I wonder if we should complacently judge the Victorian way of negotiating taboos by camouflaging forbidden acts in fancy dress.
This was all the reincarnation of earlier souls, who sinned and caused others to sin and did all sorts of forbidden acts.
If a Muslim is in a combat or godless area, he is not obligated to have a different appearance from those around him.... Resembling the polytheist in religious appearance is a kind of "necessity permits the forbidden," even though they (forbidden acts) are basically prohibited...
The Jewish people have been persecuted by one zealot or the others over the last three millenniums; the point of no return came when they were ordered to bow down to an idol and eat the flesh of a pig - the most forbidden acts in Judaism.
