| a. | 1. | Not friendly; not kind or benevolent; hostile; |
| 2. | Not favorable; not adapted to promote or support any object; |
| Adj. | 1. | unfriendly - not easy to understand or use; "user-unfriendly" Antonyms: friendly - easy to understand or use; "user-friendly computers"; "a consumer-friendly policy"; "a reader-friendly novel" |
| 2. | unfriendly - not disposed to friendship or friendliness; "an unfriendly coldness of manner"; "an unfriendly action to take" Antonyms: friendly - characteristic of or befitting a friend; "friendly advice"; "a friendly neighborhood"; "the only friendly person here"; "a friendly host and hostess" | |
| 3. | unfriendly - lacking warmth of feeling; "a chilly greeting"; "an unfriendly manner" Synonyms: chilly | |
| 4. | unfriendly - not friendly; "an unfriendly act of aggression"; "an inimical critic" Synonyms: inimical | |
| 5. | unfriendly - very unfavorable to life or growth; "a hostile climate"; "an uncongenial atmosphere"; "an uncongenial soil"; "the unfriendly environment at high altitudes" Synonyms: uncongenial, hostile |