straight from the horse's mouth

/streɪt frɒm ðə ˈhɔːsɪz maʊθ/◆idiom
directly from the original source

I don't believe the news about the merger until I hear it straight from the horse's mouth.

I need to confirm the information by getting it directly from the person in charge or the official source.

◆ What It Really Means
Information obtained directly from the original or most authoritative source, ensuring reliability and accuracy.
Literal Meaning
Information obtained directly from a horse's mouth.
Literal Breakdown
straightin a direct line or manner+fromindicating the source or origin+the horse's mouththe oral cavity of a horse
◇ Mental Image
A mental picture of someone receiving information directly from a horse’s mouth, symbolizing the most direct and unfiltered way to get the truth.
◈ When to Use
Imagine a workplace where rumors about layoffs are circulating. An employee might say, 'I don’t believe the rumors until I hear it straight from the horse’s mouth—that is, from the CEO’s official announcement.'
◉ Cultural Note
The phrase likely originated in horse racing culture, where trainers or owners (the 'horse's mouth') would provide the most accurate information about a horse’s condition. Over time, it became a metaphor for getting information from the most reliable source in any context.
informal

information obtained directly from the original or most authoritative source

The CEO announced the layoffs straight from the horse's mouth, so we knew it was serious.

The CEO announced the layoffs directly, so we knew it was an official statement.

She got the gossip straight from the horse's mouth when her friend told her the truth.

She received the truth directly from the person who experienced it firsthand.

Used to emphasize that information is reliable because it comes from the primary source, not a secondary or unreliable one.

Related Phrases

from the horse's mouthidiom
directly from the original source
hear it on the grapevineidiom
to learn information through gossip or unofficial channels
take something with a grain of saltidiom
to view something with skepticism or caution

Pro Tip

Use in conversations

This idiom is perfect for emphasizing the reliability of information in casual conversations. For example, 'I don’t trust rumors; I need to hear it straight from the horse’s mouth.'

Gold Rule

Avoid literal interpretation

This idiom is figurative. Do not interpret it as suggesting that you are literally getting information from a horse’s mouth—it means the information comes from the most direct and authoritative source.

Word Origin

The phrase originated in the early 20th century, likely from horse racing, where the most reliable information about a horse's condition and performance would come from its trainer or owner (the 'horse's mouth'). Over time, it evolved into a metaphor for getting information directly from the most authoritative or original source.

Usage Notes

This idiom is commonly used in both spoken and written English to stress the reliability of information. It implies that the information is trustworthy because it comes from someone with direct knowledge or authority. Avoid using it in formal or technical writing where precision is critical.

Word Breakdown

straight
directly, without intermediaries
adverb
+
from the horse's mouth
from the original or most authoritative source
idiomatic phrase
English Dictionary
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