How to Find Repeated Words Like "the the" Before Anyone Else Does

The quickest way to catch a doubled word like "the the" is to let software look for it, because your brain is built to skip it. Paste your text into the Duplicate Word Finder and every word typed twice in a row is highlighted, counted and ready to fix, including the sneaky ones split across a line break. Here's why these typos hide so well and how to clear them out.

Why are doubled words so hard to spot?

When you read, your eyes jump ahead in short hops and your brain fills in what it expects to see. A second "the" adds nothing to the meaning, so it gets quietly dropped. That's why you can proofread a paragraph three times and still miss "and and".

Line breaks make it worse. If one "the" ends a line and the next line starts with "the", the two words are far apart on the screen and almost never read as a pair. Spell checkers rarely help, because both words are spelled correctly, and many browser text boxes and email clients don't check for repeats at all.

What does the finder flag?

The rule is narrow on purpose, so you aren't buried in false alarms:

• The same word twice in a row, with only spaces or line breaks between them. "I saw the the cat" is flagged.
• Capitals don't matter. "The the end" is caught, because the comparison ignores case.
• Line breaks don't hide anything. A word at the end of one line and the same word at the start of the next is flagged.
• Punctuation stops the match. "Well, well" and "Yes. Yes." are left alone, because a comma or full stop between them usually means the repeat was deliberate.
• Numbers are skipped. "10 10" in a table or a list of scores is not treated as a typo.

A run of three counts once for each extra word. "and and and" shows up as two repeats, since two of the three need to go.

The finder works in any language that separates words with spaces. Chinese and Japanese are skipped, because repeated characters are a normal part of those writing systems.

What about "had had" and "that that"?

Some doubles are correct English. "She had had enough" uses the past perfect of "have". "He said that that was fine" uses "that" as a conjunction and then as a pronoun. Emphatic pairs such as "very very" and "so so", or replies like "no no", are fine in informal writing too.

By default the finder skips a list of these often-legitimate doubles, including "had had", "that that", "is is", "very very", "no no" and "so so". If you want to see every repeat regardless, tick Also flag doubles that are often correct. That's worth doing on formal writing, where "very very" is probably something you'd rather cut anyway.

How to find and fix repeats step by step

1. Paste your text into the box. Repeats are highlighted straight away.
2. Read the summary above the text. It says how many repeats were found and lists each word, with a count such as "the" ×2 when one word repeats more than once.
3. Use Previous and Next to jump from one highlighted pair to the next. The current one gets an outline, and a counter shows where you are, for example "2 of 5".
4. Fix them by hand in your original document, or press Remove all repeats to delete the extra copies in the box.
5. Press Copy fixed text to copy the corrected version to your clipboard.

When nothing is found, a green "No repeated words found" notice appears.

What does "Remove all repeats" change?

It deletes the second copy of each flagged word together with the spaces after it, and leaves your line breaks where they were. Here's a short before and after:

• Before: "I saw the the cat and" on one line, then "and the dog." on the next.
• After: "I saw the cat and" on one line, then "the dog." on the next.

Only flagged words are removed, so with the default settings "She had had enough" stays as written. Skim the highlights first, though: a quoted stammer or a chorus may be a repeat you want to keep.

Related clean-up tools

If a list or log has the same line several times, Remove Duplicate Lines clears them in one go. To fix a mistake that appears all over a document, such as a misspelled name, use Find and Replace. To see exactly what changed between your original and the cleaned-up version, paste both into Text Diff. And for clarity, the Sentence Length Checker highlights sentences that run on too long.

FAQ

Will it catch a repeated word with a comma in between?

No. "Well, well" and "no, no" are skipped on purpose, because punctuation between two identical words almost always means the writer chose to repeat them.

Does it find repeated phrases, like "in the in the"?

No. It compares single neighbouring words only. A doubled phrase such as "in the in the" isn't flagged, because no word sits directly next to a copy of itself.

Is my text sent to a server?

No. The check runs entirely in your browser and nothing is saved.

Before your next essay, email or post goes out, run it through the Duplicate Word Finder and catch the repeats your eyes skip.