What is the longest word you can derive using the combination specified?'Siwashing', which consists of 9 letters.
What is the highest number of points you can get in Scrabble using this list of words that include 'siw'?It is possible to make 'siwashed' for a total of 15 points in Scrabble.
How many actual words can you make with this combination of letters?From this page of words with 'siw' in them, Dictionarypedia has found 5 entries which can be selected.