と相まって means together with…, more; because of the influence of…, more ~. It is a JLPT N1 Japanese grammar pattern used to express that two or more factors combine and produce an amplified result—often a heightened state, outcome, or impression.
This grammar point appears frequently in news reports, formal essays, and polished writing. If you want to explain that a situation is intensified because multiple elements work in tandem, と相まって is an essential pattern for achieving natural, sophisticated Japanese.
What does と相まって mean?
Use と相まって when you want to express that multiple conditions, qualities, or circumstances interact and make a result stronger, more noticeable, or more extreme.
Natural translations include:
- together with…, more; because of the influence of…, more ~
- coupled with…, all the more; combined with…, even more
Try to notice the writer’s focus—are they highlighting the synergy or the amplified effect itself? Then choose the English phrase that feels most accurate.
How to form と相まって
と相まって attaches to a noun. The structure is flexible, often listing two contributing factors.
Examples of the pattern:
- 実力と運と相まって
- 美しい景色と相まって
- 彼の誠実さも相まって
The grammar point itself is invariable, but the preceding noun defines the source of the synergy. In JLPT N1 questions, they often test whether you can identify that the pattern requires a noun before it.
When is と相まって used?
Use と相まって in situations like:
- describing how two conditions together create an unexpected or powerful result
- explaining why an event, feeling, or impression was especially strong
- providing nuanced reasoning in formal statements, critiques, or analyses
Tone and register:
- Formal, slightly literary. You’ll rarely hear it in casual daily chat, but it’s common in essays, business documents, and news commentary.
- It carries a tone of thoughtful observation rather than raw emotion.
と相まって example sentences
After reading each sentence, ask what job と相まって is doing: it explains that the result is stronger because of the combination of factors. That makes the nuance easier to recall than memorising a single English equivalent.
Nuance of と相まって
The key nuance is synergy: two (or more) elements interact to produce an effect greater than either one alone. This goes beyond simple addition; the grammar implies that the outcome would have been less extreme or less noticeable without the pairing.
This nuance matters because learners sometimes mistake と相まって for a simple cause-and-result pattern like “because of A, B happened.” However, と相まって insists that both A and a second factor (explicit or implied) work together.
For example:
- 彼の実力だけでもすごいが、それと相まって人柄の良さがさらに評価を高めた。 (Even just his ability is impressive, but together with his good personality the assessment rose further.)
- Notice how the sentence could have stopped after the first factor, but the addition with と相まって pushes the evaluation even higher.
と相まって vs とあって
Both と相まって and とあって can link a situation to a result, but they operate with different logic.
If you can rephrase the sentence with “simply because,” you likely want とあって. If you need to mention that a second ingredient was essential for the extra punch, と相まって is the right call.
Common mistakes with と相まって
Is と相まって on the JLPT?
Yes. と相まって is a staple of JLPT N1 grammar lists.
Test sections: Language Knowledge (Grammar) · Reading
Frequency: Moderate – appears several times across official workbooks and past papers.
Typical question: Choose the correct particle/noun combination to complete a complex sentence, or identify the sentence where the grammar is used naturally.
For the exam, focus on the noun-before-the-pattern rule and the need for a compound cause. Remember that questions often disguise the second factor inside a long noun phrase.
Practice questions for と相まって
Keep your first attempts simple. Once the structure feels natural, expand the sentence with adjectives and subordinate clauses to build the context.
Learning path for と相まって
Related grammar to review next
- とあって – because it also links a condition to a result, but without the synergy of multiple factors
- とあれば – because it sets up a hypothetical situation leading to a reaction, useful for comparing conditional vs. combination logic
- とばかりに – because it expresses “as if to say” or an implicit judgement, showing how manner can blend with causality
- といえども – because it acknowledges a concession, contrasting with the amplifying function of と相まって
Learn と相まって with Hane
If you want to review と相まって together with the patterns above, Hane helps you practise Japanese in short, focused sessions where each grammar point is drilled in context.
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FAQ about と相まって
What does と相まって (to aimatte) mean in Japanese?
と相まって (to aimatte) means “together with..., more; because of the influence of..., more”. It is JLPT N1 grammar. Use と相まって when you want to express that multiple conditions, qualities, or circumstances interact and make a result stronger, more noticeable, or more extreme.
How do you form と相まって (to aimatte)?
と相まって attaches to a noun. The structure is flexible, often listing two contributing factors.
What is the difference between と相まって and とあって?
と相まって: Two factors combine to amplify an effect. とあって: Because it is such a special condition, naturally….
What is an example sentence with と相まって (to aimatte)?
天候の悪さと交通渋滞とが相まって、到着が大幅に遅れた。 — The bad weather coupled with the traffic jam caused the arrival to be significantly delayed.