secret

secret is an Adverb

Definition:

[1] Hidden; concealed; as, secret treasure; secret plans; a secret vow. Shak. The secret things belong unto the Lord our God; but those things which are revealed belong unto us. Deut. xxix. 29.

[2] Withdraw from general intercourse or notice; in retirement or secrecy; secluded. There, secret in her sapphire cell, He with the Naïs wont to dwell. Fenton.

[3] Faithful to a secret; not inclined to divulge or betray confidence; secretive. [R.] Secret Romans, that have spoke the word, And will not palter. Shak.

[4] Separate; distinct. [Obs.] They suppose two other divine hypostases superior thereunto, which were perfectly secret from matter. Cudworth.