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1. A message written in a secret code
   - cypher
    
2. A mathematical element that when added to another number yields the same number
   - zero, 0, nought [Brit], cypher, naught [N. Amer]
    
3. No amount at all; something of no value or importance
   - nothing, nil, nix [informal], nada [N. Amer, informal], null, aught [archaic], cypher, goose egg [N. Amer, informal], naught [N. Amer], zero, zilch [informal], zip, zippo [N. Amer, informal], nought [Brit]
    
4. A person of no influence
   - cypher, nobody, nonentity
    
5. A secret method of writing
   - cypher, cryptograph, secret code

1. Convert ordinary language into code
   - code, encipher, cypher, encrypt, inscribe, write in code
    
2. (mathematics) make a mathematical calculation or computation
   - calculate, cypher, compute, work out, reckon, figure [N. Amer]

Derived forms: ciphers, ciphering, ciphered

See also: lick [N. Amer, informal]

Type of: code, common man, common person, commoner, digit, encode, figure, message, reason, relative quantity

Encyclopedia: Cipher