Khuddakavatthuvibhaṅgaมัวเมาในบริวาร

Abhidhammapiṭaka · Vibhaṅga · Vol. 35 · Section 874

[874] Therein, what is languor (tandi)? That which is languor, the act of being languid, the state of mental languor, indolence, the act of being indolent, the state of being indolent — this is called languor.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.