sit up திடீரென விழிப்படை tiṭīreṉa viḻippaṭai (tiḍiirṇu viḻippaḍe) (7 intr) become suddenly alert; perk up, brighten up; pay attention; arouse o.s. from torpor and become aware of things; (inf.) wake up and smell the coffee
Usage:
அந்தச் செய்தியைக் கேட்டவுடன் அவன் திடீரென விழிப்படைந்தான் antac ceytiyaik kēṭṭavuṭaṉ avaṉ tiṭīreṉa viḻippaṭaintāṉ anda seediye keeṭṭadum avan tiḍiirṇu viḻippaḍenjaan When he heard that news, he suddenly sat up and took notice of things.