Kiñcana: 'something', i.e. something evil that sticks or adheres to character. 'Evil appendant', is a name for the 3 disadvantageous roots mūla. There are 3 appendants: greed lobha is an appendant, hate dosa is an appendant, confusion moha is an appendant D. 33. 'Freed from appendants' akiñcana is a term for the perfectly Noble One.
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.