yadā́ ind. (fr. 3. ya) when, at what time, whenever (generally followed by the correlatives tadā, tatas, tarhi, in Veda also by ā́t, ā́d ī́t, átha, ádha and tád), [RV.] &c. &c. (yadā yadā, followed by tadā or tadā tadā, ‘as often as — so often’, ‘whenever’; — tadā id., with repeated verbs, e.g. [Hit. i, 197]; yadaiva-tadaiva, ‘when indeed — then indeed’, [Śak.] yadā prabhṛti — tadā prabhṛti, ‘from whatever time — from that time forward’, [R.]; yadaiva khalu — tadā prabhrity eva, ‘as soon as — thence forward’, [Śak.]; yadā kadā́ ca, ‘as often as’, ‘whenever’, [RV.]; yadā kadā cit, ‘at any time’, [Kauś.]; yadā tadā, ‘always’, [Naiṣ.]; the copula after is often dropped, esp. after a participle, e.g. yadā kṣayaṃ gataṃ sarvam, ‘when all had gone to ruin’, [R.] is sometimes joined with other relatives used indefinitely, e.g. yo 'tti yasya yadā māṃsam, ‘when any one eats the flesh of any one’, [Hit.])