RhymeZone: unfriendly definitions

Definitions of unfriendly:

adjective: not friendly
Example: "An unfriendly act of aggression"
adjective: not disposed to friendship or friendliness
Example: "An unfriendly coldness of manner"
adjective: not easy to understand or use
Example: "User-unfriendly"
adjective: lacking warmth of feeling
Example: "An unfriendly manner"
adjective: very unfavorable to life or growth
Example: "The unfriendly environment at high altitudes"