We already have a languages tag and it already includes arabic and english as synonyms.
We just got a new tag german so I hunted around and found there's also a single-use dutch tag hanging around.
For uniformity shouldn't we make these two synonyms of the general tag too?
(I don't have enough score to suggest synonyms through the system.)
arabiccontinue to be synonyms of
languages, then other language tags should be merged too. But I don't see big problems in what Ankur suggests either.