πρόστεγον

Alas! Could not find the search term πρόστεγον.
Found the closest form προστεθείη. Other nearby forms can be found in the wordwheel, or perhaps try searching again without accents.

Morpho works with a static database. If you like, you can compare the output of Morpheus.

Parsed as:

aorist passive optative 3rd singular of προστίθημι