Tool to search of words in a dictionary matching a regular expression (Useful for word searches with complex criteria) also called Regex or Regexp.
Regex Word Search - dCode
Tag(s) : Word Search
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Regex Word Search
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Answers to Questions (FAQ)
What is a word search with regular expression? (Definition)
The search for words by regular expression (or regex) is a method capable of going through an entire dictionary of words, and of checking if these correspond to the set accepted by the regex.
A regular expression is a tool which describes from a pattern (a character string written according to a precise syntax) a whole set of possible character strings/word.
It is then possible to search for words with complex criteria (length, pattern, repetition, etc.). The knowlegde of the syntax of regular expressions (regexp) is mandatory.
How to find a word with regular expression?
dCode allows a search for words with regular expressions in the dictionary.
Example: To find a word of 4 letters starting with R or T and ending with its initial letter: ^([RT])..\1$
Example: To find a word with four consecutive vowels: [AEIOUY]{4}
How to write a regular expression?
dCode uses the PCRE engine (Perl Compatible Regular Expressions) and follow its standard: here (link)
Operators: ? for zero repetition or once, * for zero repetition, one or more times, + for a repeat at least once, ^ to a word beginning $ for the end of words, | for an alternative, etc. See here (link)
Source code
dCode retains ownership of the online "Regex Word Search" source code. Except explicit open source licence (indicated CC / Creative Commons / free), the "Regex Word Search" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "Regex Word Search" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, copy-paste, or API access for "Regex Word Search" are not public, same for offline use on PC, tablet, iPhone or Android ! Remainder : dCode is free to use.
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