1. not amicable; not friendly or kindly in disposition; unsympathetic; aloof: an unfriendly coldness of manner.
2. hostile; antagonistic: an unfriendly act of aggression.
3. unfavorable; inhospitable or inimical, as an environment: an unfriendly climate for new ideas. adverb
4. in an unfriendly manner.
"textbooks can be unfriendly at readers."
"reports can be unfriendly for bonds."
"people can be unfriendly about lifts."
"horses can be unfriendly due to lacks."
"cities can be unfriendly to businesses."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.