Structure
Verb + ことだし
[い]Adjective + ことだし
[な]Adjective + な(1) + ことだし
Noun + の(1) + ことだし
(1) である
Details
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Standard
使用域
一般
Rare Kanji
事
About ことだし
ことだし is a combination of the noun こと 'thing', the auxiliary verb だ, and the conjunction particle し, used for listing reasons. The whole structure itself often translates simply as 'because (A)', or 'since (A)', but places extra emphasis on there being other reasons besides what the speaker has specified.
This structure may appear after any word in its attributive form, or after a noun that has been followed with の.
This structure may appear after any word in its attributive form, or after a noun that has been followed with の.
-
せっかく君のお父さんとお母さんが来ることだし、どっかいい焼肉屋さんにでも行こう。Since your father and mother are coming all the way (to see us), let's go to a nice yakiniku restaurant.
- 天気もいいことだし、みんなで公園にでも行きましょう。Since the weather is nice, let's all go to the park together.
- 彼が勤めている会社は有名なことだし、給料もいいんだろう。Since the company he works for is famous, his salary must be good.
- 彼のことだし、また遅れてくるんじゃないの。Knowing him, I bet that he will come late as usual.
Examples
飛行機代も安いことだし天気もいいから沖縄に行こうよ。
Since plane tickets are cheap and the weather is nice, let's go to Okinawa.
Unlike し, ことだし is usually not repeated, but can still be used to state more than one reason or cause directly with expressions like から/ので and the like.
割引クーポンもあることだし、明日映画を一緒に観に行かない?
I also have discount coupons, so why don't we go watch a movie together tomorrow?
もう夜も更けてくることだし、今日のパーティーはこれでお開きにしよう!
It's getting late, so let's call it a night with this!
彼も十分反省していることだし、今回はもうこの辺で許してあげたら?
I'm sure he's also sufficiently remorseful, so why won't you already let him off the hook this time?
彼女のことだし、きっと次の試合には勝つとわたしは信じているよ!
Knowing her, I am convinced that she will surely win the next match.
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