not easy to understand or use; user-unfriendly'
not disposed to friendship or friendliness; an unfriendly coldness of manner; an unfriendly action to take'
not friendly; an unfriendly act of aggression; an inimical critic
[ Syn: inimical ]
very unfavorable to life or growth; a hostile climate; an uncongenial atmosphere; an uncongenial soil; the unfriendly environment at high altitudes
[ Syn: hostile , uncongenial ]