RegEx to exclude particular words

Question

I am working on RegEx that will match a string that contains only uppercase letters and digits but not exact words ABC or XYZ or LMN.

^(?!ABC|XYZ|LMN)([A-Z0-9]+)$

This works for most of the cases but fails for input ABC12, XYZ8 etc.

How can I improve this to match the requirement.

I've referred RegEx to exclude a specific string constant but couldn't tackle this one.

The input for this regEx would be a word with finite length and no sentence that will contain white spaces — ManjushaDC, Jan 15 '21 at 04:48

score 1 · Accepted Answer · answered Jan 15 '21 at 06:55

1

If you are trying to match the whole string or line using ^ and $, then you can put the $ inside your negative lookahead. This will allow ABC12 to match.

^(?!(ABC|XYZ|LMN)$)([A-Z0-9]+)$

answered Jan 15 '21 at 06:55

Matt Miguel

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RegEx to exclude particular words

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