大昔おおむかし
ōmukashi

Noun
Adverb

1. ancient times; prehistoric times; the distant past; a very long time ago

人間にんげん大昔おうむかし道具どうぐ使用しようおぼえた。
ningenwa ōmukashini dōguno shiyōo oboeta.
Man learned early to use tools.
Other forms: