オオイニ
Meanings
Adverb
1. very; very much; greatly; considerably; highly; exceedingly; a great deal; a lot; to one's heart's content
Pitch accent
オ
オイニ
Composed of
large; big; older; senior; final; ultimate
Examples (58 in total)
I had a lot of fun at the party.
Reading is of great benefit.
That is quite possible.