There are 10 words that start with 'extrap'.
| extrapolate | extrapolated |
| extrapolates | extrapolator |
| extrapolating | extrapolation |
| extrapolative | extrapolators |
| extrapolations | extrapyramidal |
Note: These 10 words that start with 'extrap' are found from the USA & Canada version of the tournament Scrabble word list.