There are 6 14-letter words that start with 'emb'.
| embarrassingly | embarrassments | 
| embellishments | emblematically | 
| embranglements | embrittlements | 
Note: These 6 14-letter words that start with 'emb' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with embr, embo, emba, embl, embe, embi.
5-letter words start with 'emb' (5)