Other forms: friendlies, friendlier, friendliest
Friendly describes someone who is warm and easy to talk to. The neighbour who says hello over the fence, the waiter who remembers what you ordered last time, a dog that comes straight over with its tail going.
The prepositions split the meaning, so watch them: to be friendly TO someone is to treat them kindly, while to be friendly WITH someone is to be close to them. English has turned the word into an ending as well — user-friendly, child-friendly, dog-friendly, eco-friendly — each one meaning easy or safe for that group. In the army, friendly fire is the bitter phrase for being shot at by your own side. In British football a friendly is a match played for practice with nothing at stake. And there is no adverb: you say he smiled in a friendly way, never friendlily.
1adjectivefriendlyBehaving in a warm and open way towards other people.~2%
“The staff were friendly without being pushy.”
synonyms: warm, approachable, genial
2adjectivecloseClose to someone; on good terms with them.~4%
“She is friendly with the woman who runs the shop.”
3adjectivehostileNot hostile; on your own side.~33%
“The plane finally crossed into friendly airspace.”
4adjectiveeasyEasy or safe for a particular group, used at the end of a compound.~57%
“The whole menu is child-friendly.”
5nounsportsA sports match played for practice rather than as part of a competition, in British use.~4%
“They lost the friendly but rested three injured players.”
Shares are an estimate: a language model read 24 sentences found in the wild and placed 24 of them on a sense — a count of our sample, not a measurement of English.
Friendly is Old English frēondlīċ — friend with the ending -līċ, which is the ancestor of the modern -ly. Proto-Germanic had it as *frijōndlīkaz, and the cousins are still recognisable across the North Sea: Dutch vriendelijk, German freundlich, West Frisian freonlik. It has meant friend-like for well over a thousand years.
Proto-Germanic
*frijōndlīkaz
Old English
frēondlīċ
Middle English
frendly
English, today
friendly
From Middle English frendly, freendly, frendely, frendlich, from Old English frēondlīċ, from Proto-Germanic frijōndlīkaz, equivalent to friend + -ly. Cognate with stq früntelk, fjuntelk (“friendly”), West Frisian freonlik (“friendly”), Dutch vriendelijk (“friendly”), German Low German fründelk, frünnelk (“friendly”), German freundlich (“friendly”). a doublet of friendlike.
Etymology from Wiktionary, CC BY-SA