# get up on the wrong side of the bed

idiom

Source: https://englishreference.com/idiom/get-up-on-the-wrong-side-of-the-bed
Updated: 2026-08-10

## Meaning

To feel irritable; to be in a bad mood; to have a bad day from the start, for no particular reason.

## Examples

- You seem grumpy today, did you get up on the wrong side of the bed?
- My coworker snapped at everyone during the morning meeting, so I suspect he got up on the wrong side of the bed.
- Although the morning began with perfect weather, his irritable demeanor suggested he had gotten up on the wrong side of the bed.

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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.