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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Secret language 4 letters:

CODE: Secret language
PIGLATIN: Not-so-secret secret language
MOUSECODE: Mickey's secret language?
REMORSECODE: Secret language for the contrite?
ARGOT: Secret language
CODED: In secret language
ENCODE: Put in a secret language
ENCODER: Secret language device
CODES: Secret languages