Trickish is a word that connotes treachery, slyness, and deceit. It is often used to describe someone who employs cunning or deceitful methods to achieve their objectives. Some synonyms for trickish include deceitful, cunning, sly, guileful, artful, duplicitous, and devious. These words all suggest the use of dishonest means to achieve one's goals. Trickery is often used in politics, where politicians use deceitful tactics to manipulate voters. Trickery is also used in business, where competing companies use deceptive marketing and advertising to lure customers away from their competitors. In general, trickery is often associated with negative or unethical behavior.