Bilked means to cheat or defraud. There are several synonyms for this word that can be used interchangeably. Some of the synonyms for bilked include: swindle, fleece, rip off, con, scam, deceive, defraud, dupe, trick, hoodwink, and bamboozle. All these words signify the fraudulent act of taking someone's money or property by dishonest means. These words can be used in different contexts, and they all depict the same moral principle. The use of these synonyms can vary depending on the context, type of fraud, or the degree of severity of the situation. Nevertheless, they are all great choices to convey the concept of being bilked.