1.
long ago, ancient times, the distant past
Refers to a time very far in the past, much more distant than 昔 alone. Used both for actual historical/prehistoric times and colloquially for things that feel like a long time ago.
大昔 is an emphatic form of 昔, intensified by the prefix 大.
Related words
- 昔: a long time ago, the past
- 大昔: a very long time ago, ancient times
Usage
Often used in storytelling and history contexts. In casual conversation, 大昔の話 ("that's ancient history") dismisses something as no longer relevant.
Watch out: The fairy-tale opening "once upon a time" is むかしむかし (昔々), not 大昔.