Enter a clue or pattern or both:
The Clue
90 (11 letter answer)
The Answer
PARENTHESES
Tags
Notes
The answer PARENTHESES is so rare that it appears less than once every 2500 puzzles.
Related Clues
They keep groups together
Definition
PARENTHESIS as a noun:
1. either of two punctuation marks (or) used to enclose textual material
2. (digression, aside, excursus, divagation, parenthesis) = a message that departs from the main subject