verb

• (intransitive) To violate rules in order to gain, or attempt to gain, advantage from a situation.
  "My brother flunked biology because he cheated on his mid-term."
• (intransitive) To be unfaithful to one's spouse or partner; to commit adultery, or to engage in sexual or romantic conduct with a person other than one's partner in contravention of the rules of society or agreement in the relationship.
  "My husband cheated on me with his secretary."
• (transitive) To avoid a seemingly inevitable thing.
  "He cheated death when his car collided with a moving train."
• (transitive) To deceive; to fool; to trick.
  "My ex-wife cheated me out of $40,000."

noun

• (card games) A card game where the goal is to have no cards remaining in a hand, often by telling lies.
• (video games) A hidden means of gaining an unfair advantage in a video game, often by entering a cheat code.
  "I've had a number of requests for a cheat for Turrican the first. Yes, there is a keypress built in […]"

noun

• (obsolete) A sort of low-quality bread.
  "The raueled cheat therfore is generallie ſo made that out of one buſhell of meale, after two and twentie pounds of bran be ſifted and taken from it (wherevnto they ad the gurgeons that riſe from the manchet) they make thirtie cast, euerie lofe weighing eightéene ounces into the ouen and ſixteene ounces out[…]"