accusative singular masculine of ujjuka (adjective); or adverbial accusative
Analysis. A simple adjective without compound structure. The form ujuṁ is the accusative singular masculine (with internal sandhi of -ka > -ṁ before a following consonant in many contexts, though here it represents the straightforward accusative ending -ṁ).
Etymology. From Indo-European *h₂reǵ- 'to stretch, straighten' (cognate with Latin rectus 'straight', English right). The Pali root *rejj- 'stretch, straighten' underlies ujjuka. The word is semantically and morphologically transparent: 'made straight' or 'the straight one'.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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