Akusala: Disadvantageous, are all those kammic intentions kamma-cetanā see: cetanā and all consciousness and mental properties associated therewith, which are accompanied either by greed lobha, hate dosa or confusion moha or derivatives thereof. All these mental states are causing disadvantageous kamma-results and contain the initiating seeds of unhappy & painful future, destiny and rebirth.
References[]
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.