The term 'SECRET COMPETITOR' can be broken down into five separate crossword solutions: BAN (3 letters), ARRID (5 letters), SURE (4 letters), RIGHTGUARD (10 letters), and ARRIDEXTRADRY (13 letters). BAN is a verb meaning to forbid or prohibit something, while ARRID is a brand of antiperspirant deodorant. SURE is an adjective meaning certain or definite, and RIGHTGUARD is another brand of antiperspirant deodorant. Finally, ARRIDEXTRADRY is a specific product from the ARRID brand. Together, these five solutions form the phrase 'SECRET COMPETITOR', which could refer to a rival company that is not publicly known.