unknownstart
nounUK /ʌnˈnəʊn stɑːt/
US /ʌnˈnoʊn stɑːrt/
A start that nobody knows about or can see.
The race had an unknownstart, so the runners just began when they felt ready.
OTHER MEANINGS
2. A beginning that is not marked or announced.
The game's unknownstart confused the players.
3. A first step that happens without anyone noticing.
Her journey to fame had an unknownstart in a tiny garage.
4. A point where something begins but the exact time is a secret.
The treasure hunt had an unknownstart to keep it fair.