There are 2 definitions of -eth in English:

-eth1

Syllabification: -eth

suffix

Variant spelling of -th1 (as in fiftieth).

Definition of -eth in:

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Word of the day vituperate
Pronunciation: vəˈt(y)o͞opəˌrāt
verb
blame or insult (someone) in strong language...

There are 2 definitions of -eth in English:

-eth2

Syllabification: -eth
(also -th)

suffix

archaic
Forming the third person singular of the present tense of verbs: doeth saith

Origin

Old English -eth, -ath, -th.

Definition of -eth in: