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adj. friend·li·er, friend·li·est
a. Characteristic of or behaving as a friend: a friendly greeting; is friendly with his neighbors.
b. Outgoing and pleasant in social relations: a friendly clerk.
c. Favorably disposed; not antagonistic: a government friendly to our interests.
b. Informal Easy to understand or use for a specified agent. Often used in combination: a reader-friendly novel; a consumer-friendly policy.
c. Informal Low in amount relative to a standard or regular circumstance. Often used in combination: carbohydrate-friendly.
In the manner of a friend; amicably.
n. pl. friend·lies Informal
One fighting on or favorable to one's own side: "You're the only friendly we have there right now" (Tom Clancy).