There are 15 words that start with 'outsa'.
| outsat | outsaw | outsay |
| outsaid | outsail | outsang |
| outsays | outsails | outsavor |
| outsailed | outsavors | outsaying |
| outsailing | outsavored | outsavoring |
Note: These 15 words that start with 'outsa' are found from the USA & Canada version of the tournament Scrabble word list.