We've just bought a dedicated scrabble dictionary as a lot of the computers words seemed bizarre. Collins 'Ultimate Scrabble Dictionary & Word List' (Second Edition 2012, Reissued 2014 £15 Amazon) has 270,000 words. Three of the words you mention are in this. Only 'unsainised' is not in it. 'oe' means 'grandchild'. 'maulvi' = expert in Islamic law! 'busti' = same as 'basti' a slum of poor people in India.
Since we bought this Collins dictionary we've only come across one word that wasn't in it, though we don't check all the bizarre words.