2-letter words that start with U is 1 and 3-letter words that start with U are 2. 4-letter words that start with U are 2 and 5-letter words that start with U are 2. 6-letter words that start with U are 7 and 7-letter words that start with U are 10. 8-letter words that start with U are 5 and 9-letter words that start with U is 1. 10-letter words that start with U are 7 and 11-letter words that start with U are 7. 12-letter words that start with U are 2 and 13-letter words that start with U are 5. 14-letter words that start with U is 1. Total start with U are 52.