1. people who express or promote moral principles, often in a self-righteous or preachy manner
Usage: plural of moraliser; chiefly British spelling (American: moralizers)

Examples

• The moralisers in the community criticized the film for its content.
• She grew tired of listening to the moralisers lecture about proper behavior.
• Many moralisers fail to recognize their own hypocrisy.
• The newspaper was full of moralisers condemning the scandal.
• These self-appointed moralisers often ignore their own shortcomings.