underþeodan

Old English

Equivalent to under- +‎ þēodan.

underþēodan

(dative or preposition) to subjugate, make subject (beneath or under) (+ under)
- late 9th century, King Alfred's translation of Saint Augustine's Soliloquies
  Ðū þe ūs lǣrdest þæt wē underþīeddan ūrne lȳcuman ūre mōde.
  Thou who hast taught us to subject our body to our mind.
to subject to something; to make endure; to make liable
to subjoin, add
to support

Conjugation of underþēodan (weak class 1)

indicative mood	present tense	past tense
infinitive	underþēodan	underþēodenne
first person singular	underþēode	underþēodde
second person singular	underþēodest, underþēotst	underþēoddest
third person singular	underþēodeþ, underþēott, underþēot	underþēodde
plural	underþēodaþ	underþēoddon
subjunctive	present tense	past tense
singular	underþēode	underþēodde
plural	underþēoden	underþēodden
imperative
singular	underþēod
plural	underþēodaþ
participle	present	past
	underþēodende	underþēoded

Joseph Bosworth and T. Northcote Toller (1898) “UNDERÞĒODAN”, in An Anglo-Saxon Dictionary‎^[1], 2nd edition, Oxford: Oxford University Press.