Deceitful Tactics

noun a person who is involved in making secret and dishonest plans to achieve a particular goal

• The corporate schemer was eventually caught for embezzlement.
• Don't trust that guy, he's a real schemer.
• Watch out for that schemer, he's always up to no good.
• The schemer in the novel was always plotting something behind the scenes.

noun A person who entices or leads someone astray, typically into a sexual relationship.

• The accused was known as a notorious seducer who preyed on vulnerable individuals.
• I heard that guy is a real smooth talker, a total seducer.
• Watch out for that player, he's a real seducer.
• The seducer of dreams whispered promises of success and happiness, leading many astray.

adjective done in a secretive or dishonest way

adverb in a secretive or dishonest manner

• The underhand tactics used by the competitor were quickly exposed by the regulatory authorities.
• I don't trust him because he always seems to have some underhand scheme up his sleeve.
• I heard she's been up to some underhand stuff behind everyone's back.
• His underhand compliments were actually meant to insult her.