There are 18 8-letter words that start with 'plan'.
| planaria | planches | planchet | planform |
| plangent | planking | plankter | plankton |
| planless | planners | planning | planosol |
| plantain | planters | planting | plantlet |
| planulae | planular | ||
Note: These 18 8-letter words that start with 'plan' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with plane, plant, plani, plana, plank, planc, plann, plano, planu, plang, planl, planf, plans.
5-letter words start with 'plan' (4)