What is the most misspelled words?

[2getherwewin]

referred - Final consonants are often doubled before suffixes (remit: remitted, remitting). However, this rule applies only to accented syllables ending on [l] and [r], e.g. "rebelled," "referred" but "traveled," "buffered" and not containing a diphthong, e.g. "prevailed," "coiled."