Duplicate Words Regex Pattern

Live Regex Tester

Pattern Breakdown

Code Examples

const regex = /\b(\w+)\s+\1\b/gi;
const test = "the the";
console.log(regex.test(test)); // true

// Extract matches
const matches = test.match(regex);
console.log(matches);

import re

pattern = r'\b(\w+)\s+\1\b'
test = "the the"
match = re.findall(pattern, test, re.IGNORECASE)
print(match)  # Found!

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`\b(\w+)\s+\1\b`)
    fmt.Println(re.MatchString("the the")) // true
}

Common Use Cases

Match Examples

About the Duplicate Words Regex

Detects consecutively repeated words like "the the" or "is is". Useful for proofreading and text cleanup.

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The duplicate words pattern is classified as intermediate difficulty in the text & strings category. It works in all major programming languages.

When using this regex, always consider edge cases and test thoroughly with real-world data. Use the interactive tester above to validate the pattern against your specific inputs before deploying to production.

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