Enter a clue or pattern or both:
The Clue
Styrofoam's boast? (11 letter answer)
The Answer
IMPERMANENT
Tags
Notes
The answer IMPERMANENT is so rare that it appears less than once every 2500 puzzles.
Definition
IMPERMANENT as an adjective:
1. (impermanent, temporary) = not permanent; not lasting; "politics is an impermanent factor of life"- James Thurber; "impermanent palm cottages"; "a temperary arrangement"; "temporary housing"
2. existing or enduring for a limited time only