Tintiṇāti & Tintiṇāyati [either=Sk. timirayati to be obscured, from tim in timira, or from stim (Sk. *tistimāyati>*stistim˚ after tiṣṭhati>*stiṣṭhati;=P. titiṇāyati) to become stiff, cp. timi, thīna and in meaning mucchati. The root tam occurs in same meaning in cpd. nitammati (q. v.=Sk. nitāmyati) at J iv.284, expld by atikilamati] to become sick, to swoon, to (stiffen out in a) faint J i.243 (tintiṇanto corresp. with mucchita); vi.347 (tintiṇāyamāna, v. l. tiṇāy˚).

Pali-English Dictionary, TW Rhys Davids, William Stede,