There are 11 13-letter words that start with 'ec'.
| eccentrically | ecclesiastics |
| echolocations | econometrists |
| ecophysiology | ecoterrorisms |
| ecoterrorists | ectoparasites |
| ectoparasitic | ecumenicalism |
| ecumenicities | |
Note: These 11 13-letter words that start with 'ec' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with eco, ech, ect, ecl, ecc, ecu, ecd, ecs, ecr, eca, ece, ecz, ecb.
3-letter words start with 'ec' (1)