OK, I've done some research and got the definitive answer on the euro.
This information comes from the
European Commission Translation Service's English Style Guide.
| Guidelines on the use of the euro, issued via the Secretariat-General, state that the plurals of both 'euro' and 'cent' are to be written without 's' in English. Do this when amending or referring to legal texts that themselves observe this rule. Elsewhere, and especially in documents intended for the general public, use the natural plural with 's' for both terms. |
|
Note the final sentence, which, in effect, says "yes you can use -s after all". This document uses "euros", not "euro", as the plural form.
I think, therefore, we'll have to remove it from the list, except in legal texts.
Rommie