The phrase 'under any pretext' is correct and usable in written English.
You can use it to refer to any excuse or justification for doing something. For example, "He refused to do it, citing some spurious reason under any pretext."
Because we believe in human dignity, we should take seriously the protection life from exploitation under any pretext.
… Above all, guard them against the virtual restoration of slavery in any form, under any pretext, and then let them take care of themselves".
"We will not allow any non-Egyptian party to intervene in our internal affairs under any pretext," the Egyptian Foreign Ministry said in a statement.
We, the undersigned, Refuse any form of intimidation against journalists, citizen journalists, media activists or media organizations, by any group, in any context and under any pretext.
The appearance of Poulenc's Sextet for Piano and Winds on any program, under any pretext, is always a reason to settle back and have fun.
Any illegal aliens attempting to go through security, under any pretext of invitation or otherwise, should be arrested and deported," he continued in tweets.
"We... will not under any guise or pretext give the 'green light' to anyone to implement this third bailout," he told the real.gr news website on Wednesday, saying the deal would perpetuate the destructive policies of "relentless austerity and degrading servitude".
But these places have bills to pay, and it does them no good to overly refine their standards — they're geared to call a book a classic under any plausible pretext they can find.
If from any other motives, or under any other pretexts, the internal peace and order of the state are disturbed, and its own powers are insufficient to suppress the commotion, it becomes the duty of its proper government to apply to the Union for protection.
Is the country paying too high a price for its policy?Critics fear that any challenge to an already authoritarian government is gradually being outlawed under a pretext of criminalising the promotion of so-called "genocide ideology".
Wherever standing armies are kept up, and the right of the people to keep and bear arms is, under any colour or pretext whatsoever, prohibited, liberty, if not already annihilated, is on the brink of destruction.
