Regular Expression that does not contain string ABC

[^ ABC] indicates that it does not contain any character in A, B, and C. How can I write an expression that does not contain a string ABC?

The simplest method:

\ B ((?! ABC) \ W) + \ B
Matches a string consisting of letters, numbers, underscores, or Chinese characters.

Explanation:
\ B matches the start or end of a word;
?! Exp: Zero-width-negative predicate. Only the position with the suffix exp does not exist;
\ W matches letters, numbers, underscores, and Chinese characters;
+ Repeat once or more times;
\ B ((?! ABC) \ W) + \ B matches a string consisting of letters, numbers, underscores, or Chinese characters, but ABC cannot appear in the string.

Test:
Http://www.regextester.com/