indeclinable
Tadā (adverb) [Vedic; cf. kadā] then, as that time (either past or future) D II 157; Ja II 113, 158; Pv I 10 5 ; Pv-a 42. Also used like an adjective: te tadā-mātāpitaro etarahi m° ahesuṃ "the then mother and father" Ja I 215 (cf. Latin quondam); tadā-sotāpanna-upāsaka Ja II 113.
then, at that time; in that case; as correlative to yadā
【無】 那時，然後。
(ind, ind, adv, from ta) then; at that time Construction: ta + dā