There are 20 words that start with 'look'.
| look | looks | looked | 
| looker | lookup | lookers | 
| looking | lookism | lookist | 
| lookout | lookups | lookdown | 
| lookisms | lookists | lookouts | 
| looksism | lookalike | lookdowns | 
| looksisms | lookalikes | |
Note: These 20 words that start with 'look' are found from the USA & Canada version of the tournament Scrabble word list.