unknownbeginning
nounUK /ʌnˈnəʊn bɪˈɡɪnɪŋ/
US /ʌnˈnoʊn bɪˈɡɪnɪŋ/
A start that nobody knows about or can see.
The story of the old tree has an unknownbeginning that no one remembers.
OTHER MEANINGS
2. A beginning that is not yet discovered.
Scientists study the unknownbeginning of the universe.
3. A first part that is missing or lost.
The book's unknownbeginning made it hard to follow.
4. A start that happens without anyone noticing.
The friendship had an unknownbeginning at a busy playground.