cipher; secret code; password; PIN

to keep sth confidential; to maintain secrecy

Smith (name)

intimate; close

secret; classified; classified information; secret

Miami (Florida)

a room for keeping sth hidden; secret room; hidden chamber

Romeo (name)

to encrypt; encryption; to protect with a password

to inform against sb

to declassify; (computing) to decrypt; to decipher

close; intimate; to strengthen (ties, cooperation etc); closely; intently; carefully; (math.) to osculate

surname Mi; name of an ancient state

dense; close; thick; intimate; close; (bound form) secret; confidential; (Internet slang) to send a private message to (sb); to DM

inseparably close

to seal up

tight; strict; closely controlled; rigorous and thorough

secret agent; detective; covert investigator

conspiracy; secret plan; to conspire

tell-tale; informer (esp. to police); whistleblower; grass

Mississippi

to leak secrets

private; secret; intimate

accuracy; exact; precise; refined

(surname) Schmidt or Schmitt

Michigan, US state

secret police

density; concentration

concentrated; crowded together; intensive; compressed

Hamilton (name); Hamilton, capital of Bermuda

top secret

Missouri

close friend

secret document

Missouri

Miss (loanword)

thick; murky

dense (of plant growth); lush

(cryptography) key

secret; hidden

Smith (name); also rendered as 史密斯

careful; thorough; meticulous

Michigan, US state (Tw)

Ptolemy, kings of Egypt after the partition of Alexander the Great's Empire in 305 BC; Ptolemy or Claudius Ptolemaeus (c. 90-c. 168), Alexandrian Greek astronomer, mathematician and geographer, author of the Almagest 天文學大成|天文学大成; see also 托勒玫[Tuo1 le4 mei2]

Mississippi River

dense

Milwaukee (city)

top secret document; classified papers

code word; coded language; to communicate in private