Which to use
“ACK” is a verb and “acme” is a noun - they look or sound alike but fill different roles in a sentence.
- #33,924
- “ACK” frequency rank
- #33,104
- “acme” frequency rank
- 67028
- confusion score
Side-by-Side Comparison
| Feature | ACK | acme |
|---|---|---|
| Definition | To acknowledge a packet or a message received from a network. | A high point: the highest point of any range, the most developed stage of any process, or the culmination of any field or historical period. |
Letter map: ACK vs acme
Shared letters muted; letters that set ACK and acme apart highlighted. Shared run: 2. ACK runs 3 letters (VCC) against acme's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: ACK vs acme
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ACK is averb and acmeanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 67028, derived from the frequency rank of both members and their visual similarity.
ACK is recorded at frequency rank #33,924, classified as averb. acme is at rank #33,104, tagged as anoun, pronounced /ˈæk.mi/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 67028, this pair ranks #65,303 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of ACK vs acme
Shared letters: ac. Private to "ACK": k. Private to "acme": em.
"ACK" · 3 letters · shape VCC · "acme" · 4 letters · shape VCCV
Known mistypes of this pair
- acme ← accme · acem · acmme
Frequently Asked Questions
Is swapping "ACK" for "acme" ever safe?
Which is more common, "ACK" or "acme"?
Useful next steps
Done with this confusable. These links stay specific to "ACK" and "acme".
- Full dictionary entry for "ACK" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "acme" - compare definitions side by side with the headword page. Word entry
- This pair ranks #65,303 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "ACK" and "acme" also get mixed up with nearby pairs, the highest-scored neighbour is "ACK vs amb". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #65,303 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.