The term SUBSCRIBE TO can be broken down into two crossword solutions: BELIEVE and ENDORSE. To BELIEVE is to accept something as true, real, or genuine. It is often used in the context of faith or religion, but it can also be used to express a feeling of trust or confidence in someone or something. To ENDORSE is to publicly support or approve of something. This could be a product, a person, or an idea. Endorsement is often seen in the form of advertisements or celebrity endorsements. Together, these two words suggest that one should have faith in something and publicly support it.