Enter a clue or pattern or both:
The Clue
Customs officer's concern (9 letter answer)
The Answer
SMUGGLING
Tags
Notes
The answer SMUGGLING is so rare that it appears less than once every 2500 puzzles.
Definition
SMUGGLING as a noun:
1. secretly importing prohibited goods or goods on which duty is due
SMUGGLE as a verb:
1. import or export without paying customs duties; "She smuggled cigarettes across the border"