► 終助詞
か [か] [coll] meaning: question rank: 1
☆ お前狂ったのか？ ⇨ Have you gone insane?
☆ これ使ってもいいですか？ ⇨ Can I use this?
☆ もうこれ以上いらないのか？ ⇨ You don’t need any more?
☆ 窓を開けてもいいでしょうか？ ⇨ Is it OK if I open the window?
かな [かな] [か＋な] [coll] [peer] meaning: question rank: 1
☆ 君はどう思うかな？ ⇨ What do you think?
な [な] [coll] [junior] [男] meaning: question rank: 1
☆ お前に言ったこと、分かったな？ ⇨ You got what I told you, right?
☆ お母さんには言うなよ、いいな？ ⇨ Don’t tell mom, OK?
な [な] [coll] [peer] meaning: question rank: 1
☆ これだけあれば足りるかな？ ⇨ I wonder if this will be enough
☆ もしかして彼等道に迷ったのかな？ ⇨ I wonder if they got lost
ね [ね] [coll] meaning: question rank: 1
☆ あいつわざとやったのかね？ ⇨ Did he do it on purpose?
☆ これで本当に良いんですね？ ⇨ Are you really OK with this?
☆ 分かったね？ ⇨ You understood, right?
の [の] [coll] [peer] meaning: question rank: 1
☆ これが欲しいの？ ⇨ Do you want this?
☆ これでいいの？ ⇨ Is this OK? Will this do?
☆ 何が言いたいの？ ⇨ What are you getting at?
☆ 何やってんの？ ⇨ What are you doing?
☆ え、そうなの？ ⇨ Whoa, is that so? (☛ Question to make sure of something)
☆ 本当にこれでいいの？ ⇨ Is this really OK? (☛ Question to make sure of something)
かしら [(1)かしら] [coll] [peer] [女] meaning: question rank: 2
☆ このスカートどうかしら？ ⇨ How about, what do you think of, this skirt? (☛ Slightly old-fashioned. Usually used by young-adults and above)
☆ 彼、私のことどう思ってるのかしら？ ⇨ I wonder how he feels about me (☛ Slightly old-fashioned. Usually used by young-adults and above)
け [け] [っけ] [coll] [casual] meaning: question rank: 2
☆ そうだったっけ？ ⇨ Was that really so? (☛ A verb in past tense + sokuon (っ) + け. Ask about something you’d known but forgot)
☆ 入り口の暗証番号は何だったっけ？ ⇨ What was the passcode for the entrance? (☛ A verb in past tense + sokuon (っ) + け. Ask about something you’d known but forgot)
☆ 確定申告の締切は何時でしたっけ？ ⇨ When is the deadline for tax return? (☛ A verb in past tense + sokuon (っ) + け. Ask about something you’d known but forgot)
かい [かい] [coll] [peer] [男] meaning: question rank: 3
☆ これで十分かい？ ⇨ Is this enough? (☛ A colloquial variation of か)
かい [かい] [coll] [junior] meaning: question rank: 3
☆ おまえが吉蔵の娘かい？ ⇨ Are you the daughter of Kichizo? (☛ Often used by old people in period dramas)
► 助動詞
だろ [だろ] [だろ(だ)] [coll] [peer] [男] meaning: question rank: 2
☆ おまえ冗談だろ？ ⇨ You’re kidding, right?
► 成句
だろう [だろう] [だろ(だ)＋う] [coll] [男] meaning: question rank: 1
☆ おまえ本気じゃないだろう？ ⇨ You’re not serious, right?
だろう [だろう] [だろ(だ)＋う] [coll] meaning: question rank: 1
☆ 次の電車は何時だろう？ ⇨ What time will the next train be?
でしょう [でしょう] [です＋う] [coll] [polite] meaning: question rank: 1
☆ まさか本気じゃないでしょう？ ⇨ You’re not serious, are you?
☆ 次の電車は何時でしょう？ ⇨ What is the time for the next train?