1423: Candelabrum or Candelabra Nov 3, 2018
Even though English adopts so many words as easily as it does, no language tends to adopt the morphology with it. For all the words with Latin plurals, like 'flagella' to 'flagella', there are many more words that have become anglicized. However, there are a few for which neither is quite true, such as 'candelabra'. The traditional singular is 'candelabrum' with 'candelabra' as the plural, but in practice it is often singular, with 'candelabras' as the plural. This is now the more common usage, with it now becoming standard. This is true of other words like 'bacterium' and 'datum', but not necessarily to the same extent.