i Register
In some senses, violation is marked as slang, euphemistic. Watch for register when choosing this word.
ADJ
blatant, clear, flagrant
The new factory's dumping of chemicals into the river was a blatant violation of environmental laws.
grave, gross, major, massive, serious | wholesale, widespread | continued, repeated | human rights | traffic
VERB + VIOLATION
commit
Several countries committed serious violations of the international treaty last year.
be, constitute
Parking in a disabled space is a serious violation of the law.
PREP
in ~ of
The new traffic law made it clear that parking here would be in violation of city regulations.
~ against
The new law represents a serious violation against workers' basic human rights.