"immoral means" is a correct and usable phrase in written English.
You can use it when referring to behaviors, strategies, or actions that are deemed to be ethically wrong or unacceptable. For example, "That company has been known to use immoral means to increase their profits."
Study suggests money obtained by immoral means is valued less.
He pressed Play, and so began Tyler McCoy's rags-to-riches story through violent and immoral means.
His detective, Commissariat Montalbano, is not unlike Zen: a man who pieces together clues out of coincidences, and who has an acute moral conscience while being worldly enough to understand how to exploit immoral means for noble ends.
This, I think, is the main obstacle before Central European reform movements: the reformers' morality, their dedication to truth, makes them shun the levers of power that heretofore have been reachable only by immoral means.
So begins the women's comically inept attempt at bettering their lives by immoral means, a process that is somewhat improbably stretched out to fill two hours of stage time through a series of twists that keep them bickering and plotting and exchanging mournful recriminations as poor Davy stiffens in the bathroom.
If this interpretation is right, then reason would never require one to will immoral means.
In his view, animal suffering in order to alleviate human suffering is wholly immoral, which means all such experimentation is wrong and must be stopped.
However I accept that the refusal to comply with this greedy, immoral request means the end of my tenure with this company.
(Most Nigerians use "immoral" to mean sexual. They rarely use the word to refer to real immorality: institutional corruption).
He declined, saying it was only my imagination; then admitted his inattention derived from my health insurance, which he called "immoral" – "I mean it.
When they say a work is grossly unintelligible, they mean that the artist has said or made a beautiful thing that is new; when they describe a work as grossly immoral, they mean that the artist has said or made a beautiful thing that is true.
