parenthetical

Set off within or as if within parentheses; qualifying or explanatory.

Using or containing parentheses.

A parenthetical word, phrase, or remark.

Pertaining to or of the nature of a parenthesis; expressed as or in a parenthesis: as, a parenthetical clause.

Using or containing parentheses: as, a parenthetical style.

Occurring like a parenthesis or episode; incidental.

Curved; bowed; resembling in shape the marks called parentheses.

using, containing, or within parentheses (like this)

that explains or qualifies something

that is incidental