'decent behaviour' is correct and usable in written English.
You could use it to refer to someone's polite, honorable, and respectful behavior. For example, "Mary always shows decent behaviour towards others."
I'm all for porn (within the realms of decent behaviour).
The notion of voluntary decent behaviour has reached far beyond the field of play, but cricket defines it.
"He told Tom Johnson he would send him to the graveyard, and that crossed the line of decent behaviour.
When he was fourteen or fifteen, Washington wrote out in one of his schoolbooks a list of "101 Rules of Civility & Decent Behaviour in Company and Conversation".
The copybook in which he transcribed at 14 a set of moral precepts, or Rules of Civility and Decent Behaviour in Company and Conversation, was carefully preserved.
"What kind of man is it who can count his fortune in billions but does not know what decent behaviour is?" asked Field.
In "Circumcision is an affront to decent human behaviour", (Comment), Catherine Bennett put male circumcision on a par with female genital mutilation.
I was a victim of professional neglect on the part of the authorities who should have been working to uphold decent standards of behaviour.
Employers should therefore require decent standards of behaviour at work and make it clear that if employees do not observe these standards, they run the risk of disciplinary action being taken against them".
And social housing isn't a reward for good behaviour; decent housing is a fundamental human right denied to 1.8 million households (about 5 million people) on the waiting lists.
The show of trust - an assertion of basic, decent principles of behaviour in defiance of the evidence of a 5-0 Test whitewash - was appreciated by Flintoff and his relationship with the coach deepened as a result.
