^start of line
Negative Lookahead(?!.*\b(?:abc|def|ghi)) .*any character (except for line terminators), repeated any number of times
\ban ASCII word boundary
Non-Capturing Group(?:abc|def|ghi) abcthe literal text abc (case sensitive) defthe literal text def (case sensitive) ghithe literal text ghi (case sensitive) .*any character (except for line terminators), repeated any number of times
\.the literal . (4610 / 568 / 2E16)
xyzthe literal text xyz (case sensitive) \.the literal . (4610 / 568 / 2E16)
orgthe literal text org (case sensitive) .*any character (except for line terminators), repeated any number of times
$end of line
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string