What Does 「努力を重ねる」 Mean? A Useful Japanese Expression for Writing and JLPT Reading

What Does 「努力を重ねる」 Mean?

Have you ever seen the expression 「努力を重ねる」 and wondered:

“How is this different from simply saying 「努力する」?”

「努力を重ねる」 (doryoku o kasaneru / to keep making efforts, to build up one’s efforts) is a common expression in written Japanese.

You may encounter it in newspaper articles, biographies, business writing, news reports, and JLPT N3–N2 reading passages.

The basic meaning is:

「努力を重ねる」 = to continue making efforts repeatedly over a period of time

The important point is that this expression does not usually describe one single effort.

It creates an image of continuing to work hard, step by step, over time.

「重ねる」 Does Not Only Mean “To Stack”

The verb 「重ねる」 (kasaneru) often means “to put one thing on top of another.”

For example:

• 本を重ねる (hon o kasaneru / to stack books)
• 皿を重ねる (sara o kasaneru / to stack plates)
• 紙を重ねる (kami o kasaneru / to stack sheets of paper)

However, 「重ねる」 also has an abstract meaning:

to repeat something or accumulate it over time

This meaning appears in expressions such as:

• 努力を重ねる (doryoku o kasaneru / to keep making efforts)
• 練習を重ねる (renshū o kasaneru / to practice repeatedly)
• 経験を重ねる (keiken o kasaneru / to accumulate experience)
• 研究を重ねる (kenkyū o kasaneru / to carry out repeated research)
• 検討を重ねる (kentō o kasaneru / to consider something repeatedly and carefully)

Nothing is literally being stacked here.

Instead, imagine each effort, experience, or attempt being added to the previous one.

That image is the key to understanding 「重ねる」 in written Japanese.

The Difference Between 「努力する」 and 「努力を重ねる」

Both 「努力する」 (doryoku suru) and 「努力を重ねる」 refer to making an effort, but their nuances are slightly different.

「努力する」 is the more general expression.

日本語が上手になるように努力します。

I will make an effort to improve my Japanese.

Here, the meaning is simply “I will work hard” or “I will make an effort.”

Now compare it with:

日本語が上手になるために、毎日努力を重ねています。

I have been making steady efforts every day to improve my Japanese.

The second sentence emphasizes continuous effort over time.

A useful way to remember the difference is:

「努力する」
→ to make an effort

「努力を重ねる」
→ to continue making efforts and gradually build them up

That sense of accumulation is what makes 「努力を重ねる」 especially useful in formal and written Japanese.

「努力を重ねる」 Is Especially Common in Written Japanese

You can use 「努力を重ねる」 in conversation, but it is particularly common in writing.

For example:

彼は長年にわたって努力を重ね、ついに研究を完成させた。

He continued working hard for many years and finally completed his research.

The expression tells us that his achievement came after a long period of continued effort.

Another example:

チームは優勝を目指して練習と努力を重ねてきた。

The team has continued practicing and making efforts in pursuit of the championship.

Again, this does not describe one practice session.

It describes repeated effort over time.

失敗を経験しながらも、彼女は努力を重ねて技術を身につけた。

Despite experiencing failures, she continued making efforts and eventually acquired the necessary skills.

In sentences like these, 「努力を重ねる」 highlights the process leading to a result.

Common Words Used with 「努力を重ねる」

For JLPT reading, it is not enough to memorize individual vocabulary items.

It is also important to notice which words commonly appear together.

「長年、努力を重ねる」

「長年」 (naganen / for many years) emphasizes a long period of time.

彼は長年努力を重ね、ついに夢を実現した。

He worked hard for many years and finally achieved his dream.

「地道に努力を重ねる」

「地道に」 (jimichi ni / steadily, persistently) means continuing something patiently and consistently rather than looking for a quick or dramatic result.

地道に努力を重ねた結果、試験に合格することができた。

As a result of steadily working hard, I was able to pass the exam.

「地道に」 and 「努力を重ねる」 are a very natural combination.

「日々、努力を重ねる」

「日々」 (hibi / day after day) strongly emphasizes continuity.

選手たちは大会に向けて日々努力を重ねている。

The athletes are working hard day after day in preparation for the competition.

「努力を重ねた結果」

This pattern is especially useful for reading formal Japanese.

努力を重ねた結果、新しい技術の開発に成功した。

As a result of continued efforts, they succeeded in developing a new technology.

Here, 「努力を重ねる」 describes the process, while 「結果」 introduces the outcome.

This process → result structure appears frequently in written Japanese.

In JLPT Reading, Pay Attention to the Passage of Time

When you see 「努力を重ねる」 in a JLPT passage, do not stop at:

「努力」 = effort

or

「努力する」 = to work hard

Look for expressions that show continuity or the passage of time.

For example:

• 長年 (for many years)
• 毎日 (every day)
• 何度も (many times)
• 少しずつ (little by little)
• 地道に (steadily)
• 長い時間をかけて (over a long period of time)
• ～た結果 (as a result of...)
• ついに (finally)

These words often provide clues that the writer is describing a process.

Consider this example:

田中さんは何度も失敗したが、研究をあきらめなかった。十年以上にわたって努力を重ねた結果、新しい治療法の開発に成功した。

Mr. Tanaka failed many times, but he did not give up his research. After continuing his efforts for more than ten years, he succeeded in developing a new treatment.

The important information is not simply:

“He worked hard.”

The passage has a clear progression:

failure
↓
continued effort
↓
more than ten years pass
↓
result
↓
success

Understanding this flow is essential for JLPT reading comprehension.

Why Do Learners Get Reading Questions Wrong Even When They Know the Words?

Many JLPT learners have had this experience:

“I understand almost every word, but I still choose the wrong answer.”

This is very common.

Reading comprehension is not only about understanding vocabulary.

You also need to understand:

• who did what
• what caused what
• what the writer wants to emphasize
• where the direction of the argument changes
• which expressions show a process or passage of time

「努力を重ねる」 is a good example.

If you memorize it only as “to make an effort,” you may miss part of the meaning.

It is better to understand the complete image:

continued effort
↓
accumulation over time
↓
eventual result

Once you see that pattern, the surrounding passage becomes much easier to understand.

Improve Your Reading by Moving from “Meaning” to “Relationships”

As you move from JLPT N3 toward N2, passages become more complex.

One reading habit becomes especially important:

Do not look only at the meaning of individual words. Look at the relationship between sentences.

For example:

何度も失敗した。しかし、彼は努力を重ねた。その結果、目標を達成した。

He failed many times. However, he continued making efforts. As a result, he achieved his goal.

The structure is:

failure
↓
しかし (shikashi / however)
↓
continued effort
↓
その結果 (sono kekka / as a result)
↓
achievement

Words such as 「しかし」 and 「その結果」 clearly show the logical relationship between sentences.

But expressions such as 「努力を重ねる」 also help create the flow of a passage.

Once you begin noticing these relationships, you will rely less on intuition when choosing answers.

Summary: 「努力を重ねる」 Expresses Continued, Accumulated Effort

「努力を重ねる」 means:

to continue making efforts repeatedly and gradually build them up over time

Compared with the simple 「努力する」, it places more emphasis on duration, repetition, and the process leading to a result.

It often appears together with expressions such as:

• 長年 (for many years)
• 日々 (day after day)
• 地道に (steadily)
• 何度も (many times)
• ～た結果 (as a result of...)
• ついに (finally)

Remembering these combinations will help you not only use Japanese more naturally but also understand JLPT reading passages more accurately.

When reading, do not ask only:

“What does this word mean?”

Also ask:

“How does this expression connect to the sentence before it?”

and:

“What result comes after this process?”

JLPT reading ability is not determined only by how many words you know.

It also depends on how quickly you can recognize the structure and flow of a passage.

That ability improves through repeated practice.

RJT (Rapid Japanese Training) gives you opportunities to answer JLPT-style questions yourself and practice making decisions under real reading conditions.

If you often think:

“I understand the sentence, but I cannot decide which answer is correct.”

or:

“N2 reading suddenly feels much harder than N3.”

then it may be time to move from simply reading Japanese to actively practicing how to choose the correct answer.

Start your JLPT practice with RJT