ADJ. absolute, total | great, strict | excessive, unnecessary | commercial, official
VERB + SECRECY maintain | be shrouded in | swear sb to All the researchers on the project are sworn to secrecy.
SECRECY + VERB surround sth
PREP. in ~ The drugs squad operates in the greatest secrecy. | ~ about The organization has managed to maintain secrecy about its activities.
PHRASES a blanket/cloak/veil of secrecy A blanket of secrecy surrounded the tribunals.