The phrase “for completeness’ sake” is common in English writing and speaking.
It is often used when someone adds extra information to make sure nothing important is missing. While this phrase is useful, repeating it too often can make your English sound dull or robotic. That is why learning other ways to say “for completeness’ sake” is important.
Choosing the right alternative can change your tone. Some phrases sound more formal, while others feel friendly or casual. In professional writing, emails, reports, and presentations, the right wording helps you sound clear and confident.
In this guide, you will learn 21+ synonyms for “for completeness’ sake”, with simple explanations and examples to help you use them naturally.
What Does “For Completeness’ Sake” Mean?
“For completeness’ sake” means adding information so that everything is fully covered. The speaker or writer may feel the detail is not essential, but it helps make the message whole.
Grammar Note:
- It is a prepositional phrase.
- It often appears at the start or middle of a sentence.
- It is usually followed by a comma.
Example:
For completeness’ sake, I will mention the final step.
When to Use “For Completeness’ Sake”
You can use this phrase in many situations, especially when explaining or reporting information.
Formal Contexts
- Academic writing
- Business reports
- Legal or technical documents
- Presentations
Informal Contexts
- Casual conversations
- Emails to colleagues
- Explaining steps or instructions
Written vs Spoken
- More common in writing
- Less common in casual spoken English
Is It Professional or Polite to Say “For Completeness’ Sake”?
Yes, “for completeness’ sake” is generally polite and professional. It shows that you care about accuracy and clarity. However, it can sound slightly stiff or formal, especially in casual conversations.
In corporate settings, it works well in:
- Reports
- Emails
- Documentation
But in friendly chats or marketing content, softer alternatives may sound more natural.
Pros and Cons of Using “For Completeness’ Sake”
Pros
- Sounds professional
- Shows attention to detail
- Clear and precise
- Common in academic and business writing
Cons
- Can sound stiff or formal
- Overuse feels repetitive
- Less natural in casual speech
20+ Other Ways to Say “For Completeness’ Sake”
Below are formal and informal alternatives to help you sound fluent and confident.
1. For the sake of completeness
Meaning: To ensure all information is included
Explanation: A very close and formal synonym
Example Sentence: For the sake of completeness, the report includes last year’s data.
Best Use: Formal, Business
Worst Use: Casual chats
Tone: Formal
2. To be thorough
Meaning: To cover everything carefully
Explanation: Emphasizes care and detail
Example Sentence: To be thorough, I checked the numbers again.
Best Use: Professional, Academic
Worst Use: Very casual talk
Tone: Neutral
3. For clarity
Meaning: To make something easier to understand
Explanation: Focuses on understanding, not just completeness
Example Sentence: For clarity, I will explain this step again.
Best Use: Teaching, Business
Worst Use: Legal writing
Tone: Neutral
4. For reference
Meaning: Provided for information only
Explanation: Often used in documents and emails
Example Sentence: For reference, the old policy is attached.
Best Use: Business, Written
Worst Use: Storytelling
Tone: Formal
5. Just to be complete
Meaning: To avoid missing anything
Explanation: Slightly more conversational
Example Sentence: Just to be complete, let’s review the last point.
Best Use: Semi-formal
Worst Use: Legal writing
Tone: Friendly
6. To cover all bases
Meaning: To prepare or explain everything
Explanation: Idiomatic and informal
Example Sentence: I added examples to cover all bases.
Best Use: Casual, Workplace
Worst Use: Academic writing
Tone: Friendly
7. For the record
Meaning: To officially note something
Explanation: Often used in meetings
Example Sentence: For the record, I agree with the plan.
Best Use: Business, Meetings
Worst Use: Casual chats
Tone: Formal
8. As a final note
Meaning: To add last information
Explanation: Common in emails and talks
Example Sentence: As a final note, the deadline is Friday.
Best Use: Professional
Worst Use: Technical manuals
Tone: Neutral
9. For accuracy
Meaning: To make sure information is correct
Explanation: Focuses on correctness
Example Sentence: For accuracy, the dates were double-checked.
Best Use: Reports, Research
Worst Use: Casual talk
Tone: Formal
10. Just in case
Meaning: To prevent missing something
Explanation: Very informal
Example Sentence: I’ll send the file again, just in case.
Best Use: Casual
Worst Use: Academic writing
Tone: Friendly
11. To make things complete
Meaning: To finish all details
Explanation: Simple and learner-friendly
Example Sentence: To make things complete, add your signature.
Best Use: Instructions
Worst Use: Legal writing
Tone: Neutral
12. For full context
Meaning: To show the whole situation
Explanation: Helpful in explanations
Example Sentence: For full context, read the first email.
Best Use: Business, Teaching
Worst Use: Casual chats
Tone: Neutral
13. To leave nothing out
Meaning: Include all details
Explanation: Direct and clear
Example Sentence: I reviewed the list to leave nothing out.
Best Use: Informal, Spoken
Worst Use: Academic writing
Tone: Friendly
14. As an added detail
Meaning: Extra but useful information
Explanation: Soft and polite
Example Sentence: As an added detail, parking is free.
Best Use: Emails, Guides
Worst Use: Legal writing
Tone: Friendly
15. For documentation purposes
Meaning: To officially record information
Explanation: Very formal
Example Sentence: For documentation purposes, please sign here.
Best Use: Corporate, Legal
Worst Use: Casual
Tone: Formal
16. To round things out
Meaning: To finish fully
Explanation: Conversational and smooth
Example Sentence: To round things out, let’s review the budget.
Best Use: Presentations
Worst Use: Legal writing
Tone: Friendly
17. As a reminder
Meaning: To repeat important info
Explanation: Useful in emails
Example Sentence: As a reminder, the meeting starts at 10.
Best Use: Business
Worst Use: Reports
Tone: Neutral
18. To ensure completeness
Meaning: Formal version of the phrase
Explanation: Direct and professional
Example Sentence: To ensure completeness, all sections were reviewed.
Best Use: Academic, Business
Worst Use: Casual
Tone: Formal
19. For the sake of accuracy
Meaning: To avoid mistakes
Explanation: Similar but more precise
Example Sentence: For the sake of accuracy, I updated the figures.
Best Use: Reports
Worst Use: Casual talk
Tone: Formal
20. As a quick add-on
Meaning: Small extra information
Explanation: Very informal
Example Sentence: As a quick add-on, lunch is provided.
Best Use: Casual emails
Worst Use: Academic writing
Tone: Friendly
21. For completeness
Meaning: Shortened version of the original phrase
Explanation: Clean and professional
Example Sentence: For completeness, the appendix is included.
Best Use: Formal writing
Worst Use: Casual speech
Tone: Formal
Comparison Table: Top Alternatives
| Phrase | Tone | Best Usage |
|---|---|---|
| For the sake of completeness | Formal | Academic, Business |
| To be thorough | Neutral | Professional |
| For clarity | Neutral | Teaching, Business |
| Just in case | Friendly | Casual |
| To cover all bases | Friendly | Workplace |
FAQs
1. Is “for completeness’ sake” formal?
Yes, it is mostly formal and used in professional writing.
2. Can I use it in emails?
Yes, especially in business or academic emails.
3. What is a simpler alternative?
“Just to be complete” or “just in case.”
4. Is it common in spoken English?
Not very. Shorter phrases sound more natural.
5. Can I remove it from a sentence?
Sometimes, yes. If the meaning stays clear, it may not be needed.
Conclusion
Learning alternatives to “for completeness’ sake” helps you sound more natural and confident in English. Some phrases fit formal writing, while others work better in friendly conversations.
By choosing the right words, you improve clarity, tone, and professionalism. Try using a few new phrases each week. With practice, your English will feel smoother, clearer, and more fluent in any situation.
David Jonson is an experienced English language writer who specializes in clear, practical, and learner-friendly content. He helps students and professionals improve their communication skills with confidence.