Regular Expressions 101

\ba Unicode word boundary

Negative Lookahead(?!(?:word1|word2)\b)

Non-Capturing Group(?:word1|word2)

1st Alternativeword1

word1the literal text word1 (case sensitive)

2nd Alternativeword2

word2the literal text word2 (case sensitive)

\ba Unicode word boundary

\w+a Unicode word character, repeated at least once

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

u modifier: unicode. Treats the pattern and subject as UTF-16

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\b(?!(?:word1|word2)\b)\w+

New

Basically I need a regex which will return true if the string is a word (\w+) EXCEPT if it is the word word1 OR word2.