Is "bestfriend" an acceptable spelling now?
Solution 1:
The words best and friend combine to form a compound word, that is best friend. 'Best' is an adjective and 'friend' is a noun. So best friend is an example of an adjective/noun compound word. Bestfriend, although accepted widely is somewhere awkward. 'Best friend' should be used. Both Oxford dictionary and Merriam Webster dictionary include the word 'best friend'. It is an example of open compound word.