Letter frequency ER IN ON AT ND ST ES EN OF TE ED OR TI HI AS TO", and the most common doubled letters as "LL EE SS OO TT FF RR NN PP CC". Also, to note that different dialects of a language will also affect a letter's frequency. For example, an author in the United States would produce something in which the letter 'z' is more common than an author in the United Kingdom writing on the same topic: words like "analyze", "apologize", and "recognize" contain the letter in American English, whereas the same words are spelled "analyse", "apologise", and
Commonly misspelled English words thousands of variations from combining prefixes or suffixes (or both) added to the root words. To limit the scope to common words, the top 350 words are considered (according to various sources). The following list, of about 350 words, is based on documented lists of the top 100, 200, or 400 most commonly misspelled words in all variants of the English language, rather than listing every conceivable misspelled word. Each word is followed by examples of misspellings: Mispronunciation is known to be one of the most common causes of misspelling. Hence, phonetic misspelling is common, once a word is mispronounced.