indeclinable (divāti), from divā + iti
Analysis. divā (indeclinable 'by day') + iti (quotative particle 'thus, so') — a frozen instrumental form followed by the quotative, meaning 'by day so' or 'in the manner of day', used adverbially.
Etymology. diva from Proto-Indo-European *dyew- 'sky, day, shining' (cognates: Latin deus 'god', Sanskrit div- 'sky', dyaus 'day', English Tuesday < Tiw the sky-god, Greek zeus). The sense shift from 'sky' to 'day' follows the visible appearance of daylight in the sky. divā is the instrumental case form of the masculine noun diva.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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