Conjunctions and connectors

ちなみに

by the way; incidentally; for reference

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How to form it

  • Sentence + 。ちなみに、+ related extra information

Register: Neutral

Explanation

Adds a piece of related information that is not essential but may be useful.

The added information is connected to the main topic. It is not a change of subject.

Examples

  1. 来週は休みです。ちなみに、再来週も休みです。

    らいしゅうはやすみです。ちなみに、さらいしゅうもやすみです。

    Next week is a holiday. Incidentally, the week after is too.

  2. この絵は有名な画家の作品です。ちなみに、値段は一億円です。

    このえはゆうめいながかのさくひんです。ちなみに、ねだんはいちおくえんです。

    This painting is by a famous artist. For reference, the price is 100 million yen.

  3. 私は東京出身です。ちなみに、妻は大阪出身です。

    わたしはとうきょうしゅっしんです。ちなみに、つまはおおさかしゅっしんです。

    I'm from Tokyo. Incidentally, my wife is from Osaka.

Compare with

  • もっとも: もっとも adds a caveat that qualifies; ちなみに adds neutral extra information.

Common mistakes

  • Using it to change to a completely new topic.