Generally warm, approachable and easy to relate with in character.Your cat seems very friendly.
Inviting, characteristic of friendliness.He gave a friendly smile.
Having an easy relationship with something, as in user-friendly etc.
Without any hostility.a friendly competitiona friendly power or state
Macaulayin friendly relations with his moderate opponents
Promoting the good of any person; favourable; propitious.a friendly breeze or gale
AddisonOn the first friendly bank he throws him down.
(military) Of or pertaining to friendlies (friendly noun sense 2, below). Also applied to other bipolar confrontations, such as team sportsThe soldier was killed by friendly fire.
(number theory) Being or relating to two or more natural numbers with a common abundancy.friendly numbers, friendly pairs, friendly n-tuples
(sports) A game which is of no consequence in terms of ranking, betting etc.''Even as friendlies, derbies often arouse strong emotions
A person or entity on the same side of a conflict.
2008, Dennis Wengert, A Very Healthy Insanity (page 44)You see, the mission of almost every teenage girl on the loose is to first identify the targets, just like a war. These include the primary objective (the boy), the enemy (other girls), the friendlies (sympathetic girl friends and the boy's family), and unfriendlies (other boys).