Wiktionary
a. (en-comparative of: unfriendly)
WordNet
adj. not easy to understand or use; "user-unfriendly" [ant: friendly]
not disposed to friendship or friendliness; "an unfriendly coldness of manner"; "an unfriendly action to take" [ant: friendly]
lacking warmth of feeling; "a chilly greeting"; "an unfriendly manner" [syn: chilly]
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]
[also: unfriendliest, unfriendlier]
See unfriendly
Usage examples of "unfriendlier".
Even today small fishing boats cruised out on the placid waters, as if the sky held nothing unfriendlier than the dappled clouds.
Then it went down, down, toward the unfriendly folks and unfriendlier shadows hunting one another amongst the rocks below.
He'd faced unfriendlier crowds than this in his time and worked under greater pressures.