Wiktionary
unconcluded
a. Not having been concluded.
Usage examples of "unconcluded".
In real life we do not call that a story where everything is left unconcluded and in the air.
But Miss Jean artfully gave us little time for embarrassment, inviting me to show them the unconcluded programme.
The single kiss she had given me hung waiting, like a conversation unconcluded, but I refused to contemplate where it might lead.