# back that train up

idiom

Source: https://englishreference.com/idiom/back-that-train-up
Updated: 2026-08-10

## Meaning

Said to a person who is speaking or acting too hastily.

## Examples

- Back that train up, you are moving too fast.
- Before you sign that contract, back that train up and read the fine print carefully.
- I suggest you back that train up, as your current assumptions lack the necessary evidence to support such a bold conclusion.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.