There are 15 words that end with 'osted'.
| costed | hosted | posted | 
| boosted | frosted | ghosted | 
| roosted | accosted | cohosted | 
| imposted | riposted | unposted | 
| defrosted | composted | signposted | 
Note: These 15 words that end with 'osted' are found from the USA & Canada version of the tournament Scrabble word list.