Footy is a friendly, spoken nickname for football — matey, not essay English. The messy truth is that “football” is not one sport: in Britain, footy is usually soccer (a kickabout, “coming to the footy?”).

Footy is a friendly, spoken nickname for footballFooty 是 football（足球）親切、口語的暱稱——matey, not essay English哥兒們之間的說法，不是寫作文用的英文。 The messy truth is that “football” is not one sport亂糟糟的真相是，「football」不是單一一種運動：in Britain, footy is usually soccer在英國，footy 通常是指 soccer（足球）(a kickabout, “coming to the footy?”)（隨性踢球、「要不要去看 footy？」）。

In Australia, footy very often means Australian rules (AFL), and in some states rugby league; soccer is often called soccer there, not footy. So the same joke-word points at different games.

In Australia, footy very often means Australian rules (AFL)在澳洲，footy 常常是指 Australian rules（AFL，澳式足球），and in some states rugby league在某些州則是指 rugby league（橄欖球聯盟）；soccer is often called soccer there, not footy那裡的足球通常還是叫 soccer，不叫 footy。 So the same joke-word points at different games所以同一個玩笑似的字，在不同地方指的是不同的比賽。

You would not put it in a formal report unless you were quoting someone. (There is a rare older adjective footy meaning cheap or poor-quality, with a different history; that is not this everyday sports word.)

You would not put it in a formal report你不會把它寫進正式報告裡，unless you were quoting someone除非你是在引用某人說的話。 There is a rare older adjective footy meaning cheap or poor-quality有一個很少見的舊形容詞 footy，意思是廉價或品質差，with a different history有著不同的來歷；that is not this everyday sports word那不是這個日常運動用的字。