There are 12 words that start with 'succi'.
| succinct | succinic |
| succinyl | succinate |
| succinyls | succinates |
| succincter | succinctly |
| succinctest | succinctness |
| succinctnesses | succinylcholine |
Note: These 12 words that start with 'succi' are found from the USA & Canada version of the tournament Scrabble word list.