In grammar, parallelism, also known as parallel structure or parallel construction, is a balance within one or more sentences of similar phrases or clauses that have the same grammatical structure. The application of parallelism affects readability and may make texts easier to process. Parallelism may be accompanied by other figures of speech such as antithesis, anaphora, asyndeton, climax, epistrophe, and symploce.

Examples

Compare the following examples: All of the above examples are grammatically correct, even if they lack parallelism: "cooking", "jogging", and "to read" are all grammatically valid conclusions to "She likes", for instance. The first nonparallel example has a mix of gerunds and infinitives. To make it parallel, the sentence can be rewritten with all gerunds or all infinitives. The second example pairs a gerund with a regular noun. Parallelism can be achieved by converting both terms to gerunds or to infinitives. The final phrase of the third example does not include a definite location, such as "across the yard" or "over the fence"; rewriting to add one completes the sentence's parallelism.

In rhetoric

Parallelism is often used as a rhetorical device. Examples: