There are 17 words that start with 'second'.
| second | seconde |
| secondi | secondo |
| seconds | seconded |
| seconder | secondes |
| secondly | secondary |
| seconders | seconding |
| secondhand | secondaries |
| secondarily | secondariness |
| secondarinesses | |
Note: These 17 words that start with 'second' are found from the USA & Canada version of the tournament Scrabble word list.