tapati
to shine, to be bright, Dhp.387 (divā tapati ādicco, etc. = virocati Dhp-a.iv.143); Snp.348 (jotimanto narā tapeyyuṃ), Snp.687 (suriyaṃ tapantaṃ)
ger tapanīya: see sep pp. tatta1.
Sk. tapati, *tep, cp. Lat. tepeo to be hot or warm, tepidus = tepid