secret
veiled
hidden
dark
covert, hidden, unseen
Hidden
The three later word that means view is see.
covert unseen hidden masked disguised
"Perspective" is an 11-letter word that means point of view.
hide
Crypt is a word meaning hidden. Therefore, cryptology is the study of hidden information, encryption means to make hidden, and cryptic is that something's meaning is hidden. Another word is cryptography, which means hidden writing.
Hidden, covered, censored, blocked
kryptos is the greek word for secret or hidden
For the word knife, the letter "k" is hidden both K and N are consonants.