The dream analysis of adder has the meaning of adder in a dream. An adder is a snake. As such, snakes are slippery reptiles. Translated to a metaphor, an adder represents a slippery person. In other words, a person who can’t be trusted. The adder is a dream symbol for slippery cunningness, lies, deceit and danger. Dreaming of an adder means you are warned of going down the slippery slope. You may be tempted to use deceit. Or someone has been tempted to use cheating methods to take advantage of you.