khīyati : [khī + ya] is exhausted; wastes away; becomes dejected.
 

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Khīyati [Sk. kṣīyate, pass. to khayati] to be exhausted, to waste away, to become dejected, to fall away from Vin iv.152; J i.290 (dhạna); Pv ii.942; 112; Ps i.94, 96; ii.31 (āsavā); Bdhd 80. -- ppr. khīyamāna Sn 434; Bdhd 19. aor. khīyi D iii.93; grd. khīyitabba ibid. see also khāya and khīyanaka. In phrase "ujjhāyati khīyati vipāceti it seems to correspond to jhāyati2 [Sk. kṣāyati] and the meaning is "to become chafed or heated, to become vexed, angry; to take offence"; as evidenced by the combn with quâsi -- synonyms ujjhāyati & vipāceti, both referring to a heated state, fig. for anger (cp. kilissati). Thus at Vin ii.259 & passim. See ujjhāyati for further refs.

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

khīyati(

巴漢辭典 編者：(斗六) 廖文燦