常に vs いつも — both mean “always,” but they carry different nuances and fit different contexts. Let's compare these two important adverbs!


This is a great vocabulary point for intermediate learners. Both words mean 'always,' but the register and nuance make a real difference in natural-sounding Japanese.
At a Glance
| Word | Reading | Meaning | Register |
|---|---|---|---|
| 常に | つねに | Always, constantly, at all times | Formal / literary — consistent, unwavering presence |
| いつも | いつも | Always, usually, all the time | Everyday / casual — habitual or frequent occurrence |
常に (つねに) — Always / Constantly (Formal)
常に is a formal adverb meaning “always” or “at all times” — with a nuance of constancy, unwavering consistency, or principle. It's often used in formal writing, speeches, and official contexts.
- 常に努力する — to always make an effort
- 常に最善を尽くす — to always do one's best
- 常に笑顔でいる — to always keep a smile
- 変化に常に対応する — to constantly adapt to change


彼は常に前向きな姿勢で仕事に取り組む。
He always approaches his work with a positive attitude.
| Japanese | English |
|---|---|
| 常に安全を第一に考える。 | Always put safety first. |
| 常にお客様のことを考えています。 | We are constantly thinking about our customers. |
| 変化する世界で常に学び続ける。 | To keep learning constantly in a changing world. |
いつも — Always / Usually (Everyday)
いつも is the everyday word for “always” or “usually”. It's warmer, more personal, and suitable for both positive and negative situations in casual speech.
- いつもありがとう — thanks as always / always thank you
- いつも遅刻する — always late
- いつも通り — as usual / same as always
- いつもの店 — the usual place / our regular restaurant


いつもありがとう is one of the warmest phrases in Japanese — “thank you as always.” It implies an ongoing relationship of gratitude. You'll see it in emails, texts, and handwritten notes to people you care about.
| Japanese | English |
|---|---|
| いつもお世話になっています。 | Thank you for your continued support. (standard business phrase) |
| いつも通りにやればいい。 | Just do it the same as usual. |
| いつも笑わせてくれてありがとう。 | Thanks for always making me laugh. |
Key Differences
| 常に | いつも | |
|---|---|---|
| Register | Formal, literary, principled | Everyday, warm, conversational |
| Nuance | Unwavering consistency (principle) | Habitual, regular, personal |
| Can be negative? | Less common | Yes: いつも遅刻する |
| Business email? | Appropriate | Less formal: いつもお世話になっています |
| Example | 常に努力する | いつもありがとう |
Quick Quiz
Choose 常に or いつも:
- 「___ありがとうございます」(warm thank-you to a regular customer) → いつも
- 「___安全を最優先にしてください」(safety policy statement) → 常に
- 「彼は___遅刻する」(he's always late) → いつも
- 「___最善を尽くすことが大切だ」(formal statement) → 常に
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