There are 18 words that start with 'dolo'.
| dolor | dolors | 
| dolour | dolours | 
| dolomite | doloroso | 
| dolorous | dolomites | 
| dolomitic | dolomitize | 
| dolorously | dolomitized | 
| dolomitizes | dolomitizing | 
| dolorousness | dolomitization | 
| dolorousnesses | dolomitizations | 
Note: These 18 words that start with 'dolo' are found from the USA & Canada version of the tournament Scrabble word list.