Japanese grammar
What does ～たら最後 mean? Japanese grammar N1
～たら最後 means once… happens, it's all over.
| Level (estimated, JLPT framework) | N1 |
|---|---|
| Structure | Vたら + 最後 Vたが + 最後 |
| Romaji | tarasaigo |
| Meaning | once… happens, it's all over |
Forming it
| Verb (start) | 始めたら + 最後 |
|---|---|
| Verb (get found) | 見つかったら + 最後 |
How to use it
States that once A happens, a BAD consequence is certain to follow, beyond remedy.
- 「～たら最後」 = once A happens, a bad outcome is certain and cannot be reversed.
- The following clause MUST be a negative/irreversible consequence: 「～てしまう／～ない」.
- A more formal variant: 「～たが最後」.
Examples
このゲームは始めたら最後、時間を忘れてしまう。
Once you start this game, you completely lose track of time.
彼に見つかったら最後、逃げられない。
Once he spots you, there’s no escaping.
Keep in mind
- The following clause is a bad, irreversible consequence.
- Different from 「たらきりがない」 (which is just endlessness).
Common mistakes
-
Wrong始めたら最後、楽しくなる。
Once you start, you'll find it fun.
Correct始めたら最後、やめられなくなる。
The following clause must be a BAD/irreversible consequence, not something good.
-
Wrongこのゲームは始めるたら最後、絶対にやめられなくなる。
Once you start this game, you definitely won't be able to stop.
Correctこのゲームは始めたら最後、絶対にやめられなくなる。
Attaches to the た-form + ら (始めたら).
Exam tips
- 「たら最後」 = once it happens, there's no turning back; the following clause must be negative.