From Longman Dictionary of Contemporary Englishcyphercy‧pher /ˈsaɪfə $ -ər/ noun [countable, uncountable] TCanother spelling of cipher
Examples from the Corpus
cypher• He's brilliantly funny, there's nothing there, he's a cypher.• Some of it explicit, the rest hidden teasingly away - cyphers within cyphers - as if for his eyes alone.• It is one of eight in the Dolls' House, all worked with royal cyphers and the great orders of chivalry.• The King's cypher on the left-hand door of the Vauxhall.• Those differences formed the basis of the cypher. 