Regex Tester & Validator

Matches the word 'bureau' in both singular and plural forms, since the optional 'x?' allows matching 'bureau' or 'bureaux' (the French-style plural of office). The global flag ensures all occurrences are found throughout the text, and multiline mode treats each line independently. Typically used to detect office-related terminology, often in French localization or text filtering. Note the absence of word boundaries, so it will also match these words embedded inside longer strings.