undergan

Meaning

1. to ruin, undermine

2. to undergo

3. to go under

   Sōðlīċe ðǣs mōnan ġēar hæfð seofon ⁊ twentiġ daga ⁊ eahta tīda. On ðām fyrste hē underyrnð ealle ðā twelf tācna, þe sēo sunne undergǣð twelf mōnað.

   Truly, the moon's year has twenty-seven days and eight hours. In that time, it passes beneath all twelve signs [of the zodiac], which the sun passes under in twelve months.

   c. 994, Ælfric, https://books.google.co.id/books?id=iqCU4ZV4pjoC&pg=PA6De Anno (On the Year)]

Conjugation