There are 8 13-letter words that start with 'all'.
| allegorically | allelomorphic |
| allelopathies | allergenicity |
| alliterations | allomorphisms |
| allopolyploid | allotypically |
Note: These 8 13-letter words that start with 'all' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with allo, alle, allu, alli, alla, alls, ally, allh.
4-letter words start with 'all' (2)