Sux
sux definition by Slang.net
This page explains what the abbreviation "sux" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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Sux is short for "sucks," replacing the word's typical "cks" ending with an "x." If a friend tells you that something sux, it means that thing is wack, TRBL, janky, or just plain bad.
While sux is typically used as a verb (as "sucks" is), it can also be used as a noun. In this context, sux means "loser" or "disappointment." For example, a Real Madrid fan might say that Eden Hazard is "teh sux," because the footballer had a disappointing 2020 season.