transitive. To make plain or intelligible; to clear of obscurity or difficulty.

transitive. To simplify. Obsolete. rare.

transitive. To make simpler or less difficult to understand; to simplify. Obsolete.

To reduce, lessen, lower (price); to simplify.

transitive. To render (something) less complex or elaborate; to make (something) easier to do, use, or understand.

transitive. To present (a term, concept, etc.) in an intelligible form; to popularize. Obsolete.

transitive. To present (a technical or specialized subject) in a generally intelligible or appealing form. Occasionally intransitive.