There are 8 14-letter words that start with 'arc'.
| archaebacteria | archaeological |
| archaeologists | archbishoprics |
| archdeaconries | archiepiscopal |
| archimandrites | architectonics |
Note: These 8 14-letter words that start with 'arc' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with arch, arca, arcu, arct, arcs, arcc, arci, arck, arce, arco.
4-letter words start with 'arc' (3)