切り札

きりふだ

trump; trump card; ace up one's sleeve; secret weapon

Common word Also written 切札

Meanings

あの会社かいしゃの社長しゃちょうは切きり札ふだを隠かくし持もっています。

The president of that company has an ace up her sleeve.
切きり札ふだは最後さいごまで見みせるな。見みせるなら、さらに奥おくの手てを持もて。

Keep that ace up your sleeve. If you're going to show it, have another even further up.
きっと無罪むざいになるだけの決定的けっていてき切きり札ふだを隠かくし持もっているに違ちがいない。

I'm sure he has something up his sleeve.
「背せが伸のびて入はいらないわよね」「そう、断だんじて太ふとったわけではない！」「成長せいちょうしたという便利べんりな言葉ことばは我々われわれの切きり札ふだ」

"We've got taller so they don't fit." "Right, it's certainly not that we've got fat!" "The useful phrase 'grown up' is our trump card."