There are 13 words that start with 'tard'.
| tardo | tardy | tardier |
| tardies | tardily | tardive |
| tardyon | tardiest | tardyons |
| tardiness | tardigrade | tardigrades |
| tardinesses | ||
Note: These 13 words that start with 'tard' are found from the USA & Canada version of the tournament Scrabble word list.