I have been told that it's a racist derogatory term.
I've never heard this one. Are you sure it's English?– Ian MacDonaldMar 4, 2015 at 19:03
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If someone told you it is a racist derogatory term, they are probably referring to red-haired-individuals.
In some countries like the UK, ginga (pronnounced jin-ja, not gin-ga) is a slang form of "Ginger".
See Urban Dictionary Ginga
Slang U.K Ginger
See Wikipedia Red Hair - Modern-day discrimination
In British English, the words "ginger" or "ginga" are sometimes used to describe red-headed people (and are at times considered insulting)
Some other countries from English speaking history like Australia, has similar slang but it's "Ranga" as in "Orangatang" implying the orange/red hair the animals have.
See Urban Dictionary Ranga
a person who has red or orange hair
I upvoted you but ELU really requires supporting references and links. Please add, when you can. You'll be glad you did.– user98990Mar 5, 2015 at 4:32
@LittleEva ok, I added references, but is Urban Dictionary even remotely a valid source? I suppose for slang it must be. Mar 5, 2015 at 17:08
The UD is great for some definitions, not so much for others. Best to cross-reference. Tip: your links will look better on the page if you format thus - [NAME of SOURCE](URL).– user98990Mar 5, 2015 at 17:50
Also, ELU strongly recommends (insists, actually) we include our citations "in text" at some appropriate place in your answer because a bare [link] is subject to link "rot" and will then be of little avail to any reader. So, foe example, I will write; see, Urban Dictionary "ginga" [LINK](URL).– user98990Mar 5, 2015 at 19:23
@LittleEva ok that last comment is a bit confusing, can you confirm I did it ok? Mar 5, 2015 at 19:46