Blatant means done openly and obviously, without any attempt to hide it, and often in a way that shows disrespect or shamelessness. When someone commits a blatant foul in basketball, they shove another player right in front of the referee, making no effort to disguise it. A blatant lie is one that contradicts facts everyone knows to be true.

The word carries a sense of boldness or even arrogance. If a student copies answers from a neighbor during a test while the teacher watches, that's blatant rule-breaking. It's not sneaky or subtle: it's out in the open, almost daring someone to say something about it. When a rule is broken blatantly, the person breaking it either doesn't care who sees or doesn't think they'll face consequences.

You might hear people talk about blatant disrespect, blatant favoritism, or blatant disregard for rules. In each case, the behavior is unmistakable and impossible to miss. The word suggests that something is so obvious and so clear that no one could reasonably deny it's happening.