When you add a suffix to a word ending in 'fer' you sometimes need to double the 'r', but how do you know when? When you add a suffixes and the second syllable of the new word is stressed, then you ...

WASHINGTON, Aug 27 (Reuters) - The U.S. Food and Drug Administration proposed on Thursday identifying cheaper versions of biologic drugs with a suffix to distinguish them from their more expensive, ...

When you add a suffix to a word ending in 'fer' you sometimes need to double the 'r', but how do you know when? When you add a suffixes and the second syllable of the new word is stressed, then you ...