When trying to find alternative words for metaphor, it can be helpful to consider the context in which the word is being used. For example, simile and analogy both describe forms of comparison, while allegory and symbolism are more specific forms of metaphorical expression. Other words that can be used instead of metaphor include figure of speech, imagery, and trope. It's important to be aware that these words may not always have the exact same meaning as metaphor, but they can all be used to describe similar concepts. Ultimately, the best synonym for metaphor will depend on how it's being used and what the desired effect is.