θυγάτηρ

Etymology
From earlier (compare with the Homeric accusative form  created to avoid the four syllables of  and fit the hexameter) via Limitation Law which required the accent to be placed on the last two syllables, due to the long final syllable. Further via (compare 🇨🇬), from. Cognate with 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬 (whence 🇨🇬) and 🇨🇬 (cp. 🇨🇬).

Noun

 * 1) daughter
 * 2) female slave, maid-servant

Usage notes
The forms with three or more syllables do not fit the meter of Homer and other Epic poets, so in these forms the of the stem is usually lengthened to. In the following example, the of the dative plural ending has also been doubled to  to make it fit the meter.

In the following example, the accusative singular ending appears to be lengthened to, because its syllable is heavy (long), but the actual reason that the syllable is heavy is because in Homer's time the possessive pronoun  began with a doubled voiceless  (continuing PIE ) that was changed to an initial ῾ (rough breathing) in the Attic version of the text.