Third-person singular simple present indicative form of add.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "addeth" in a sentence
"Tis a tear formeth in myne eye for such a rareth performance hasth noth been seen since the Shakespearean greats … MaryOspockn I feel I musth addeth thy name to the list of others who have done so, and believeth me – the list be short."
"So, when they despaired of him, they said to Shimas, O excellent Wazir and accomplished sage, seest thou not the behaviour of this lad, young of years and little of wit, how he addeth to his offences falsehood?"
"Whoso combineth these three qualities attaineth perfection, and he who addeth thereto the piety and fear of the"