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Schedules and Planning Idioms

“Err on the Side of Caution” Origin, Meaning and Examples

This article discusses the idiom “Err on the Side of Caution,” covering its meaning, examples, and alternative expressions. This idiom is often used in conversations to suggest choosing a safer or more careful option. You’ll learn what the phrase means, how to use it in different contexts, and discover other ways to say the same thing. This article also includes a helpful picture to further illustrate the concept.

“Err on the Side of Caution” Origin, Meaning and Usage

Key Takeaways

  • The phrase “err on the side of caution” means to prioritize safety or carefulness in decision-making, especially when faced with uncertainty or risk. It implies that one should take precautions and avoid taking unnecessary risks, even if it means being overly cautious. 
Err on the Side of CautionPin
Err on the Side of Caution – Created by 7ESL

“Err on the Side of Caution” Meaning

The phrase “err on the side of caution” means to take a more careful or conservative approach when faced with uncertainty. It suggests making a decision that prioritizes safety or minimizes risk, even if it means being overly cautious.

For example, if someone says, “Let’s err on the side of caution and bring extra supplies,” it means they prefer to be more prepared than necessary, just in case something goes wrong.

Origin of This Idiom

The phrase “err on the side of caution” was derived from the meaning of the word err. To err means to make a mistake. “On the side of caution” was added after the word to imply that one should be careful and plan ahead rather than being unprepared and make an error. Err first appeared at part of a phrase back in the year 1678 as part of a phrase written by author Thomas Jones in the book titled Of the Heart, and its Right to Soveraign.

Usage of “Err on the Side of Caution”

  • In a safety context:

“When it comes to health and safety, it’s always best to err on the side of caution.”

  • Talking about decision-making:

“Given the uncertainty in the weather forecast, we decided to err on the side of caution and postpone the outdoor event.”

  • In a financial discussion:

“I would rather err on the side of caution with my investments and avoid high-risk stocks.”

  • In a work situation:

“To avoid any misunderstandings, let’s err on the side of caution and double-check our calculations.”

Here are some related terms and phrases to “err on the side of caution” that convey the idea of being careful or taking a conservative approach:

  • Better safe than sorry – it’s wiser to be cautious than to risk regret later.
  • Play it safe – to choose a careful or low-risk option.
  • Exercise caution – to be careful or cautious in a situation.
  • Take precautions – to prepare for potential risks by being careful.
  • Proceed with caution – to move forward carefully, being mindful of potential risks.
  • Stay on the safe side – to take actions that ensure safety or reduce risks.
  • Avoid risks – to steer clear of actions that could lead to trouble or danger.
  • Tread lightly – to approach a situation carefully and avoid any hasty actions.
  • Be on the cautious side – to adopt a careful, risk-averse approach.
  • Go with the safer option – to choose the option with the least risk.

Other Ways to Say “Err on the Side of Caution”

As is the case with almost all idioms, these figurative expressions can be conveyed in much more literal terms. For instance, saying better safe than sorry and better to plan than be unprepared are more literal terms that relate the same meaning.

“Err on the Side of Caution” synonyms list:

  • Take precautions
  • Erring on the side of caution
  • Be cautious
  • Be careful
  • Take care
  • Be very careful
  • Be safe
  • Carefully
  • Make sure
  • Safe than sorry
  • Better safe than sorry
  • Be on the safe side

“Err on the Side of Caution” Examples

Examples in Statements

A wedding planner offering tips and advice about the proper way to plan a reception.

  • It is always better to err on the side of caution and order more food to have enough to feed everyone, including some unexpected guests.

A from a pest control company on their webpage.

  • “A homeowner may want to err on the side of caution and have their home inspected if they know that their neighbor’s house has been treated for pests recently.”

Examples in Conversation

A father speaking to his daughter about a dress he is buying for his mom.

  • Father: Hey, Heather, do you think your mom would like this dress?
  • Daughter: Yes! I think she would love it. It’s her favorite color!
  • Father: I thought so. I just don’t know what size to get her. I think I will err on the side of caution and just buy her one size smaller than I think she is.

A son speaking to his mother about attending his football game.

  • Son: Mom, I don’t think I am going to go to the game tonight.
  • Mother: Why not?
  • Son: Because I have not been feeling well all day and I would rather err on the side of caution than end up getting sick while on the field.

Other examples:

  • It’s always best to err on the side of caution.
  • I thought it was better to err on the side of caution.
  • Travel agents are urging their clients to err on the side of caution.
B1 Knowledge Check · 5 questions

“Err on the Side of Caution” Origin, Meaning and Examples — Practice Quiz

1 / 5
Q1

Question 1: What does the word "err" mean in the idiom "err on the side of caution"?

Question 1 options
According to the article, the word "err" means to make a mistake. The idiom was built from this meaning, suggesting one should make their "mistake" toward being too careful rather than too reckless.
Q2

Question 2: The phrase "err on the side of caution" first appeared as part of a phrase in the year 1778.

Question 2 options
This statement is false. The article states that the word "err" first appeared as part of a phrase in 1678, not 1778. It was written by author Thomas Jones in a book titled Of the Heart, and its Right to Soveraign.
Q3

Question 3: Which sentence uses "err on the side of caution" correctly?

Question 3 options
"I'll err on the side of caution and take an umbrella" correctly uses the idiom to mean choosing the safer, more cautious option when facing uncertainty about the weather. The other sentences misuse the phrase by pairing it with risky, reckless, or illogical actions.
Q4

Question 4: Match each synonym or related phrase to its meaning.

Question 4 options
Better safe than sorry
Play it safe
Tread lightly
Take precautions
Choose a low-risk option
Prepare for potential risks
Approach a situation carefully
Wiser to be cautious than risk regret

Select an item on the left, then tap its match on the right.

"Better safe than sorry" means it's wiser to be cautious than to risk regret. "Play it safe" means choosing a low-risk option. "Tread lightly" means approaching a situation carefully. "Take precautions" means preparing for potential risks by being careful.
Q5

Question 5: "Given the uncertainty in the weather forecast, we decided to ___ and postpone the outdoor event."

Question 5 options
The correct phrase is "err on the side of caution," which means taking the safer, more conservative approach when facing uncertainty. The other options are not standard English idioms used in this context.

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