You are likely to have been coming across the two spellings: ‘afterall’ and ‘after all’. Which do you prefer? Or you are among those who write either depending on how the spirit directs you? Note that although both do appear in different writings, only one is correct, which is ‘after all’. The expression should be written as two words, not one. In other words, it is a grammatical blunder to join them:

I will not join the Wizkid-Davido controversy. Afterall, they are only indirectly promoting their works. (Wrong)

I will not join the Wizkid-Davido controversy. After all, they are only indirectly promoting their works. (Correct)

Governor Fubara believes he will win the battle. Afterall, some godsons have defeated their godfathers in other states. (Wrong)

Governor Fubara believes he will win the battle. After all, some godsons have defeated their godfathers in other states. (Correct)

Inspite?

This is another term sometimes so erroneously spelt by some folks. Whether in London or New York, there are two words in ‘in spite’. Perhaps, the reason some conjoin the expression is that ‘despite’, which means the same thing as ‘in spite of’, is one word:

He is here again inspite of the bad experience he had last year. (Wrong)

He is here again in spite of the bad experience he had last year. (Correct)