numerous; many; all kinds of; used to describe a great variety or large quantity

(bound form) a human mouth; often used in fixed expressions about speaking or arguing, such as in 百喙莫辩 bǎi​huì​mò​biàn

(literary) not; used to negate a verb or used in set phrases like 望尘莫及 wàng​chén​mò​jí

to argue; to dispute; to debate or discuss a point; to provide reasons to clarify or explain what is true or false