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Silent E (sometimes described by teachers as a "magic E") is a writing convention in English spelling. When reading, the silent letter e at the end of a word signals a specific pronunciation of the preceding vowel letter, as in the difference between "rid" and "ride". Analysis of common spellings and pronunciations shows that the 'silent E' most often—but not without exceptions—signals a different phoneme than a word spelled without it.
When silent E occurs in an English word, it converts a vowel to its "long" equivalent. If English were spelled with the traditional Romance language vowel values of the Latin alphabet, often these vowels would be written with another letter entirely. Moreover, alternatives exist in English for most spellings that use silent E. Depending on dialect, English has anywhere from thirteen to more than twenty separate vowel sounds (both monophthongs and diphthongs). Silent E is one of the ways English spelling is able to use the Latin alphabet's five vowel characters to represent so many vowels.
Silent E typically moves 'e' to i. This change is generally consistent across all English dialects.