Taṭataṭāyati [Onomatopoetic, to make a sound like taṭ- taṭ. Root *k&lcircle; (on ṭ for I̊ cp. taṭa for tala) to grind one's teeth, to be in a frenzy. Cp. ciṭiciṭāyāti. See note on gala and kiṇakiṇāyati] to rattle, shake, clatter; to grind or gnash one's teeth; to fizz. Usually said of people in frenzy or fury (in ppr. ˚yanto or ˚yamāna): J i.347 (rosena) 439 (kodhena); ii.277 (of a bhikkhu kodhana "boiling with rage" like a "uddhane pakkhitta -- loṇaŋ viya"); the latter trope also at DhA iv.176; DhA i.370 (aggimhi pakkhitta -- loṇasakkharā viya rosena t.); iii.328 (vātâhata -- tālapaṇṇaŋ viya); VvA 47, 121 (of a kodhâbhibhūto; v. l. kaṭakaṭāyamāna), 206 (+akkosati paribhāsati), 256. Cp. also kaṭakaṭāyati & karakarā.

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