Middle English

Pronoun

þy

1. (possessive) thy

Old English

Pronoun

þȳ m, n

1. instrumental of sē
2. instrumental of þæt

Adverb

þȳ

1. therefore, for this reason, on that account; because, since; then.
   • And þy is nu geworden wide and side to ful yfelan gewunan: and therefore it has now become an evil custom far and wide. (Sermo Lupi)
2. (used with comparative) the
   • hy beoð þy gesundran ond þy sigefæstran: they will be the safer and the more confident of victory. (Anglo-Saxon Riddles)

Conjunction

þȳ

1. For the reason that, by reason of; because, since; then.