No etymology. The word may contain the suffix "-θλο-", as in ἄεθλος (áethlos), but there is no good explanation for initial "ὑ-".
ὕθλος • (húthlos) m (genitive ὕθλου); second declension
| Case / # | Singular | Dual | Plural | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominative | ὁ ῠ̔́θλος ho húthlos |
τὼ ῠ̔́θλω tṑ húthlō |
οἱ ῠ̔́θλοι hoi húthloi | ||||||||||
| Genitive | τοῦ ῠ̔́θλου toû húthlou |
τοῖν ῠ̔́θλοιν toîn húthloin |
τῶν ῠ̔́θλων tôn húthlōn | ||||||||||
| Dative | τῷ ῠ̔́θλῳ tôi húthlōi |
τοῖν ῠ̔́θλοιν toîn húthloin |
τοῖς ῠ̔́θλοις toîs húthlois | ||||||||||
| Accusative | τὸν ῠ̔́θλον tòn húthlon |
τὼ ῠ̔́θλω tṑ húthlō |
τοὺς ῠ̔́θλους toùs húthlous | ||||||||||
| Vocative | ῠ̔́θλε húthle |
ῠ̔́θλω húthlō |
ῠ̔́θλοι húthloi | ||||||||||
| Notes: |
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