undergan

From Proto-West Germanic *undergān. Equivalent to under- +‎ gan. Akin to Old Saxon undargan, undargangan, Old High German untargān.

• IPA^(key): /ˌun.derˈɡɑːn/

undergān

1. to ruin, undermine
2. to undergo
3. to go under
   • c. 994, Ælfric, De Anno (On the Year)

     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.

• Middle English: undergon
  • English: undergo