argumentative, talkative
嚚 centers on contentious speech: being argumentative and excessively talkative in a quarrelsome way.
嚚 combines doubled mouths (吅) above and below 臣, suggesting noisy, contentious speech. The exact historical development is uncertain, but the structure visually reinforces the idea of argumentative talk.
Two pairs of arguing mouths (吅) surround a minister (臣), creating a scene of loud, argumentative debate. The doubled mouths above and below the official suggest non-stop contentious talk.
For ギン, imagine the argumentative mouths producing a sharp, metallic 'gin' sound, like a blade being drawn: gin -> ギン, cutting through the noise.