incapable
in.ca.pa.ble \(')in-'ka--p*-b*l\ \-ble-\ aj [MF, fr. in- + capable] 1:
lacking capacity, ability, or qualification for the purpose or end in v iew
: as obs 1a: not able to take in, hold, or keep obs 1b: INTOLERANT
archaic 1c: not receptive 1d: not in a state or of a kind to admit :
INSUSCEPTIBLE 1e: not able or fit for the doing or performance :
INCOMPETENT 2: lacking legal qualification or power : DISQUALIFIED -
in.ca.pa.ble.ness n
Webster's English Dictionary