stack up

比較される、匹敵する

他と比べて、質や能力、価値が上か下か、同程度である。

やさしい英語で： To be better, worse, or equally good when compared with someone or something else.

• How does this phone stack up?
• Our team stacked up well against the champions.
• The cheaper model does not stack up against this one.

使い方： stack up against someone/something (How does our service stack up against theirs?)

類義語： compare, measure up

よく使う表現： stack up against something, stack up well

積み重ねる

物を次々に上に置いて山にする。

やさしい英語で： To put things on top of each other in a pile.

• Please stack up the plates.
• We stacked the chairs up after the meeting.
• Can you stack up these boxes safely?

使い方： stack something up (Stack the empty boxes up beside the door.)

類義語： stack, pile up

反対語： unstack

よく使う表現： stack up boxes, stack up plates, stack something up

たまる、積み重なる

仕事や問題などが、処理が追いつかないほど次第にたまる。

やさしい英語で： To gradually increase in number or amount, often faster than you can deal with.

• The unpaid bills stacked up.
• Orders are stacking up faster than we can fill them.
• Small delays can stack up over a long journey.

類義語： pile up, build up, accumulate

よく使う表現： bills stack up, let work stack up, problems stack up

集める、まとめる

考えや思い出など、形のないものを集めてまとめる。

やさしい英語で： To bring together several ideas, memories, or other things that you cannot physically touch.

• She stacked up reasons to stay.
• The essay stacks up arguments for changing the law.
• We stacked up memories of our years together.

使い方： stack up something (The writer stacks up memories to build a picture of her childhood.)

類義語： collect, assemble, gather

よく使う表現： stack up memories, stack up arguments, stack up reasons