1se·cret 
/ˈsi:krət/ adjective
/ˈsi:krət/ adjective 1 : kept hidden from others : known to only a few people
▪ the robbers' secret hideout ▪ a secret compartment/passage/cave ▪ a secret formula/ingredient ▪ Her secret wish is to become a senator. ▪ The message was written in secret code. ▪ I don't know the secret password. ▪ He was sent on a secret mission. ▪ They engaged in secret negotiations with the enemy. ▪ She tried to keep her marriage secret. ▪ She has a secret admirer. [=someone admires her but she does not know who it is] ▪ She has a secret lover. [=a lover that no one else knows about] — see also secret agent, secret police, secret service, top secret 2 [more secret; most secret] : keeping information hidden from others : secretive
▪ They've been very secret about their plans.
▪ the robbers' secret hideout ▪ a secret compartment/passage/cave ▪ a secret formula/ingredient ▪ Her secret wish is to become a senator. ▪ The message was written in secret code. ▪ I don't know the secret password. ▪ He was sent on a secret mission. ▪ They engaged in secret negotiations with the enemy. ▪ She tried to keep her marriage secret. ▪ She has a secret admirer. [=someone admires her but she does not know who it is] ▪ She has a secret lover. [=a lover that no one else knows about] — see also secret agent, secret police, secret service, top secret
▪ They've been very secret about their plans.
— se·cret·ly adverb
▪ She wrote to him secretly. ▪ He was secretly delighted by their decision. ▪ They got married secretly.
▪ She wrote to him secretly. ▪ He was secretly delighted by their decision. ▪ They got married secretly.
