Most common Japanese phrases used by AI
You’re using GPT to write Japanese and fear it sounds robotic, you’re not alone.
Some phrases are dead “AI giveaways” for native readers.
We’ve ran frequency checks across 80+ AI-written docs, and had native readers pull the most repeat offenders.
Use this list to spot the tells fast and keep your writing sounding human.
Table of Contents
AI giveaways
1. 求められ
English meaning: “requires/ is required”
Used in phrases like: 「〜が求められています 」「〜が求められる 」
Shows up when the writer avoids naming who needs what and defaults to passive voice.
Across AI drafts it becomes a vague placeholder that dilutes responsibility and intent.
2. 影響を与え
English meaning: “to influence.”
Used in phrases like: 「〜に影響を与え 」「大きな影響を与える 」
AI leans on this chunk as a generic verb when a sharper verb would be cleaner.
Stacked in consecutive paragraphs, it reads templated and corporate.
3. 考えられます
English meaning: “is conceivable”
Used in phrases like: 「〜と考えられます 」
Models default to it to avoid direct claims, which makes the tone cautious and non-committal.
If you actually have evidence, assert it and move on.
Slightly uncommon phrasing utilized by AI
4. 様々な / あらゆる観点 / 包括的 / 全体として
English meaning: “various / from every angle / comprehensive / overall.”
These scope words are fine in moderation, but AI often sprays them without listing the actual angles.
The result is breadth without detail, which feels robotic to native readers.
5. 深く掘り下げる
English meaning: “to delve / to dig deep.”
Like the English phrase “delve into,” it’s not encountered everyday casual contexts.
AI’s love to use this one, an repeated this can signals generated copy.
6. 一方で
English meaning: “on the other hand”
Another phrase AI’s love to drop at the top of every other paragraph.
If used in a repetitive manner, it exposes AI use.
Common phrases but overused by AI
7. 例として
English meaning: “for example”
In all languages, AI over-relies on examples and analogies to satisfy generic prompts.
This remains the same for Japanese. Examples are helpful, but frequent use is a telltale AI characteristic.
8. 重要
English meaning: “important / critical”
Used in phrases like: 「重要である 」「重要性 」
This was the most frequent adjective used by AI throughout out all our tests.
It’s not inherently non-human, but when overused it signals AI.
9. 役割
English meaning: “role / function.”
Used in phrases like: 「〜の役割 を果たす」「重要な役割 」
Abstract noun + generic adjective is the AI comfort zone.
10. 理解
English meaning: “understanding / comprehension.”
Used in phrases like: 「理解 を深 める」
Another abstract favorite that pads sentences when a clear outcome would be stronger.
If every section aims to “deepen understanding,” the copy sounds like policy notes, not people.
Pick a measurable change when possible.
Key Takeaways
Just because these phrases appear doesn’t prove a text is 100% AI, but common occurrence is where to be careful.
To avoid these pitfalls, don’t over-rely on AI and keep building your own style.
Keep in mind that AI detectors are not able to catch AI writing reliably, since Chatbots are trained from human writing to begin with.
Closing
Even if avoid these words and phrases, a native readers often will be able to catch AI or not from “feel”.
Japanese is a complex language with many context specific rules and tonalities that an AI is still far from replicating.
These unspoken rules isn’t something you work easily work around, and can’t be learned overnight.
At Japonin Online Lessons (JOI), we offer flexible, year-round classes tailored to your specific needs. With experienced instructors and small group classes, you can polish word choice with a real teacher in a supportive environment. Try out 2 Free FlexLessons and see how JOI can help you reach your Japanese language goals.