There are 18 words that start with 'feas'.
| fease | feast |
| feased | feases |
| feasts | feasing |
| feasted | feaster |
| feasance | feasible |
| feasibly | feasters |
| feastful | feasting |
| feasances | feastless |
| feasibility | feasibilities |
Note: These 18 words that start with 'feas' are found from the USA & Canada version of the tournament Scrabble word list.