Meaning of casteth

Answer 1

It's older English that simply is a form of the verb "cast" as in to cast away something, with "eth" at the end, as often occurs in older speech at the end of verbs. Next time you come across words that end like that, try looking at which word is before the "eth", and you may be able to figure out its meaning.

Answer 2

It's an obsolete way of expressing the third person singular present indicative form of the verb "to cast".

For example, one might say "Using that Shakespeare equipment he casteth like a pro", where the more common formulation would be "Using that Shakespeare equipment he casts like a pro."

Answer 3

"Casteth" is an archaic or poetic form of the verb "cast," which means to throw or fling something forcefully. It is usually used in old English literature or religious texts.