というのも

というのも
conjunction
the reason is; because; that is because
grammatical
1. the reason is; because; that is because
A conjunction used to introduce an explanation or reason for something previously stated. Often followed by からだ or ためだ at the end of the explanatory sentence. Less formal than なぜなら.
今日(きょう)は早(はや)く帰(かえ)る。というのも、約束(やくそく)があるからだ。
I'm going home early today. The reason is, I have a commitment.
この店(みせ)はいつも混(こ)んでいる。というのも、値段(ねだん)が安(やす)くて量(りょう)が多(おお)いからだ。
This restaurant is always crowded. That's because the prices are cheap and the portions are large.
彼女(かのじょ)は日本語(にほんご)が上手(じょうず)だ。というのも、子(こ)どもの頃(ころ)東京(とうきょう)に住(す)んでいたためだ。
She is good at Japanese. That's because she lived in Tokyo as a child.

A conjunction that introduces the reason or explanation for a preceding statement. It signals 'the reason is...' and connects two sentences logically.

Common patterns

[Statement]. というのも、[reason] からだ/ためだ/のだ。

Usage

Always starts a new sentence. The explanatory sentence that follows typically ends with からだ, ためだ, or のだ to complete the causal structure. Used in both spoken and written Japanese at a neutral register.

Similar words

  • なぜなら: because — more formal and literary
  • だって: because — more casual and colloquial
  • というのは: the reason is — very similar, slightly more formal
  • なぜかというと: the reason is — explicitly asks and answers 'why'

Related Words

Synonym: なぜなら (because (formal))
Synonym: というのは (the reason is (similar))
Synonym: だって (because (casual))
general
Added 2026.3.20 11:44 · Revised 2026.9.2 13:01
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