The idiom "when in doubt, leave it out" means that if you are unsure about something, it is better to not do it or say it. It is a cautionary phrase that advises people to avoid taking unnecessary risks or making mistakes.
This idiom can be used in various situations. For example, if you are writing an essay or a report and you are not sure about a particular fact or statement, it is better to leave it out rather than risk being wrong. Similarly, if you are not sure about the appropriateness of a joke or comment, it is better to not say it.
In general, this idiom is used to encourage people to be cautious and to avoid making mistakes or causing harm. It is a reminder that sometimes it is better to err on the side of caution and to take a step back rather than to rush into something without thinking it through.
• When in doubt, it is always best to leave out any irrelevant details from the report.
• When in doubt, it is better to leave out that controversial topic from the conversation.
• When in doubt, leave that word out of the sentence.
• When in doubt, a skilled editor will leave out any passages that do not add value to the overall narrative.
• When in doubt, leave out any information you are not sure about.
• When in doubt, a good writer will leave out unnecessary words and phrases to make their writing concise and clear.