- parenthetic, parenthetical - as if using parentheses; "a parenthetical style"
- parenthetic, parenthetical - qualifying or explaining; placed or as if placed in parentheses; "parenthetical remarks"
Antonym: basic (indirect, via incidental)
- parenthetical expression, parenthetical - an expression in parentheses; "his writing was full of parentheticals"
--1 is a kind of adjunct