Blatant

The nightclub's blatant bass was felt more than it was heard.

The singer's blatant off-key singing was painful to listen to.

The athlete's blatant use of performance-enhancing drugs tarnished their reputation.

The customer's blatant disregard for the rules led to their removal from the store.

The smell of burnt popcorn was a blatant indication that it had been left in the microwave too long.