wrong side of the bed

/ˈrɒŋ saɪd əv ðə bɛd/
phraseIntermediateidiom
What It Really Means
To be in a bad mood or feeling irritable from the start of the day, often without a clear reason.
Literal Meaning
To physically wake up on the less comfortable side of the bed.
Literal Breakdown
wrongincorrect or unfavorable+side of the bedone of the two sides of a bed
Mental Image
The mental image of waking up on the less comfortable side of the bed, which metaphorically leads to a bad mood for the rest of the day.
When to Use
A coworker is unusually irritable in the morning. You might say, 'He must have gotten out of the wrong side of the bed today.'
Cultural Note
This idiom is widely used in English-speaking cultures to humorously explain or acknowledge someone's bad mood in the morning. It reflects the common experience of waking up feeling grumpy without a specific reason.
informal

To be in a bad mood or feeling irritable from the start of the day, often without a clear reason.

He must have gotten out of the wrong side of the bed today because he's been snapping at everyone.

He must have woken up on the wrong side of the bed today because he's been snapping at everyone.

I'm sorry if I'm grumpy; I must have gotten out of the wrong side of the bed.

I'm sorry if I'm grumpy; I must have woken up on the wrong side of the bed.

💡

This idiom is often used humorously or to explain someone's irritable behavior without implying a serious underlying issue.

Collocations

get out of the wrong side of the bedto wake up in a bad mood

Synonyms

Antonyms

Related Phrases

start the day on the right footidiom
to begin the day in a positive and productive manner
get out of bed on the wrong sideidiom
to wake up in a bad mood

💡Pro Tip

Usage Context

This idiom is best used in casual conversations or when describing someone's mood in a lighthearted way. Avoid using it in formal or professional settings.

Gold Rule

Correct Form

The phrase is typically used in the past tense ('got out of the wrong side of the bed') or present perfect ('have gotten out of the wrong side of the bed').

📖Word Origin

The origin of this idiom is unclear, but it likely stems from the idea that waking up on one side of the bed (perhaps the less comfortable side) could metaphorically lead to a bad start to the day.

📝Usage Notes

This phrase is commonly used in informal contexts to explain or joke about someone's irritable behavior in the morning. It is not typically used in formal or professional settings.

Word Breakdown

wrong
bad or unfavorable
adjective
+
side of the bed
a metaphorical position that determines one's mood
noun phrase
English Dictionary