akusala: 'unwholesome', are all those karmic volitions (kamma-cetanā; s. cetanā) and the consciousness and mental concomitants associated therewith, which are accompanied either by greed (lobha) or hate (dosa) or merely delusion (moha); and all these phenomena are causes of unfavourable kamma-results and contain the seeds of unhappy destiny or rebirth. Cf. kamma, paṭiccasamuppāda (1), Tab. II.

Buddhist Dictionary, Manual of Buddhist Terms and Doctrines, by NYANATILOKA MAHATHERA

unwholesome : (adj.) asappāya; ahita.

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