Enter a clue or pattern or both:
The Clue
Forty days, literally (10 letter answer)
The Answer
QUARANTINE
Tags
Notes
The answer QUARANTINE is so rare that it appears less than once every 2500 puzzles.
Definition
QUARANTINE as a noun:
1. enforced isolation of patients suffering from a contagious disease in order to prevent the spread of disease
2. isolation to prevent the spread of infectious disease
QUARANTINE as a verb:
1. place into enforced isolation, as for medical reasons; "My dog was quarantined before he could live in England"