A figure of speech is an expression that uses words imaginatively (rather than literally) to make abstract ideas concrete. Most often, figures of speech compare two seemingly unlike things to reveal surprising similarities.
The most common figures of speech are the simile and the metaphor. In a simile, the writer makes the comparison explicitly, usually by introducing it with like or as.
In a metaphor, the like or as is omitted, and the comparison is implied. For example, in the Old Testament Song of Solomon, a young woman compares the man she loves to a fruit tree.
Although figures of speech are useful devices, writers sometimes use them without thinking through the images they evoke. The result is sometimes a mixed metaphor, the combination of two or more images that don’t make sense together.
MIXED METAPHORS
Flew suggests an airplane, while under a full head of steam suggests a steamboat or a train. To clarify the image, the writer should stick with one comparison or the other.
Here the writer is mixing stoves and airplanes. Simply deleting one of the images corrects the problem.
Figures of speech can become tired and clichéd. Look again at the list of clichés to see how many are similes or metaphors.
Style point: Figures of speech
Exercises:
Clichés and figures of speech 1
Clichés and figures of speech 2