There are 13 words that start with 'surro'.
| surround | surroyal | surrogacy | 
| surrogate | surrounds | surroyals | 
| surrogated | surrogates | surrounded | 
| surrogacies | surrogating | surrounding | 
| surroundings | ||
Note: These 13 words that start with 'surro' are found from the USA & Canada version of the tournament Scrabble word list.