Friendly

1. Generally warm, approachable and easy to relate with in character.
2. Inviting, characteristic of friendliness.
3. Having an easy or accepting relationship with something.
4. Without any hostility.
5. Promoting the good of any person; favourable; propitious.
6. (military) Of or pertaining to friendlies (friendly noun sense 2, below).
7. (number theory) Being or relating to two or more natural numbers with a common abundancy.
8. (in compounds) Compatible with, or not damaging to (the compounded noun).

Antonyms

• hostile
• unfriendly