Regular Expressions 101

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/
^((?!retargetting).)*(annual)((?!retargetting).)*$
/
gmi
^ asserts position at start of a line
1st Capturing Group
((?!retargetting).)*
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data
Negative Lookahead
(?!retargetting)
Assert that the Regex below does not match
retargetting
matches the characters retargetting literally (case insensitive)
. matches any character (except for line terminators)
2nd Capturing Group
(annual)
annual
matches the characters annual literally (case insensitive)
3rd Capturing Group
((?!retargetting).)*
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data
Negative Lookahead
(?!retargetting)
Assert that the Regex below does not match
retargetting
matches the characters retargetting literally (case insensitive)
. matches any character (except for line terminators)
$ asserts position at the end of a line
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
i modifier: insensitive. Case insensitive match (ignores case of [a-zA-Z])
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gmi

Test String