There are 12 words that start with 'motorc'.
| motorcar | motorcade |
| motorcars | motorcaded |
| motorcades | motorcycle |
| motorcading | motorcycled |
| motorcycles | motorcycling |
| motorcyclist | motorcyclists |
Note: These 12 words that start with 'motorc' are found from the USA & Canada version of the tournament Scrabble word list.