Common Dyslexia Writing Mistakes Spellcheckers Miss

Standard spellcheckers are built around one assumption: that a misspelled word will look visually close to the correct one — a swapped letter, a missing character. Most dyslexic writing errors don't work that way, which is why a document can sail through spellcheck with no red underlines and still contain several real mistakes.

Homophones

Words that sound identical but mean different things — their/there/they're, your/you're, its/it's, to/too/two, then/than, were/we're — are spelled correctly as words, just the wrong one for the context. Since each is a real, correctly-spelled word, generic spellcheck has nothing to flag. This is one of the single most common dyslexic writing errors and one of the easiest for a human proofreader — or a tool built to check word-in-context, not just word-in-dictionary — to catch.

Phonetic spelling

Writing a word the way it sounds rather than how it's conventionally spelled — 'becuase', 'thort', 'recieve' — is common with dyslexia because English spelling is often inconsistent with pronunciation. Basic spellcheck usually catches these since they're visually distant from the correct spelling, but it can suggest the wrong correction if several real words are a similar edit-distance away, so it's still worth a second look rather than trusting the first suggestion.

Letter reversals and transpositions

Reversing similar-looking letters (b/d, p/q) or swapping the order of letters within a word ('form' instead of 'from', 'was' instead of 'saw') produces a different real word in many cases — which, like homophones, spellcheck has no reason to flag since the result is correctly spelled. These are worth specifically watching for when proofreading short, common words rather than assuming spellcheck has them covered.

Missing or duplicated small words

Small function words — a, the, of, to, is — are easy to drop or double up while writing, especially in longer sentences where working memory is doing more of the load-bearing. Because the sentence often still parses without them, or reads slightly awkwardly rather than being obviously wrong, this is one of the errors reading text aloud catches far more reliably than reading it silently.

Why this matters for choosing a tool

If a writing tool's grammar and spelling check is built on the same generic assumptions as a basic spellchecker — flagging what's visually close to a dictionary word — it will miss most of the above by design, not by accident. DyslexiaWrite's correction is built specifically around these patterns: homophones in context, phonetic matching, and plain-language explanations of what changed and why, rather than grammar jargon.