"friendly" in the noun sense
1. friendly
troops belonging to or allied with your own military forces
"friendlies came to their rescue"
"friendly" in the adjective sense
1. friendly
characteristic of or befitting a friend
"friendly advice"
"a friendly neighborhood"
"the only friendly person here"
"a friendly host and hostess"
2. friendly, well-disposed, well disposed
inclined to help or support not antagonistic or hostile
"a government friendly to our interests"
"well disposed to the good order and happiness of the United States"
"a relaxed environment well-disposed to the appreciation of good food and fine wine"
3. friendly
easy to understand or use
"user-friendly computers"
"a consumer-friendly policy"
"a reader-friendly novel"
4. friendly
of or belonging to your own country's forces or those of an ally
"in friendly territory"
"he was accidentally killed by friendly fire"
Source: WordNet® (An amazing lexical database of English)
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