What does ～代 mean?
～代 is a Japanese suffix meaning “fee (suffix)” in English. It can also be translated as “age range (by decade)” depending on context. It is written as ～代 in kanji, ～だい in hiragana, and ～dai in romaji. This word is part of JLPT N4 vocabulary.
NoteSuffix for a fee (電気代 = electricity bill) or a decade of age (二十代 = in your twenties).
Example sentences
今月の電気代は高かったです。
This month's electricity bill was expensive.
父は五十代です。
My father is in his fifties.