一いっ世せ一いち代だい
Meanings
Noun
No-adjective
1. once in a lifetime; the first and last occurrence (event, experience) of one's lifetime (Yojijukugo)
Other readings
Kanji used
Pitch accent
いっせいちだい
Composed of
一いっ世せ
one generation (past, present, or future); a lifetime
Noun
一いち代だい
generation; lifetime; age
Noun
Examples3
He resolved to embark on a once-in-a-lifetime enterprise.
There's a saying, "once in a life-time event," and that's just what this is.
About the wedding ... It's a once-in-a-lifetime chance to be the main attraction, so instead of doing it on a shoestring, why not pull out all the stops and make a great show of it?