There are 13 words that start with 'ulc'.
| ulcer | ulcers | ulcered |
| ulcerate | ulcering | ulcerous |
| ulcerated | ulcerates | ulcerating |
| ulceration | ulcerative | ulcerations |
| ulcerogenic | ||
Note: These 13 words that start with 'ulc' are found from the USA & Canada version of the tournament Scrabble word list.