ACK is not a Scrabble word — it is valid only in Words with Friends
No for Scrabble. ACK is in none of the Scrabble word lists, but Words with Friends accepts it: that game keeps its own list, and it includes short forms that the paper dictionaries never carried. Worth 10 points there.
Which word lists accept ACK?
| Official Scrabble Players DictionaryUSA, Canada, Thailand | Not listed |
|---|---|
| Official Tournament and Club Word ListUSA, Canada, Thailand | Not listed |
| Collins Scrabble WordsEnglish in most countries | Not listed |
| Words with FriendsZynga word list | Valid |
Word power: 61 / 100
Our own measure of how useful ACK is to know. It scores 9 from 3 tiles, takes 16 hooks, and its letters make up 4.0% of the bag. How this number is calculated
Hooks for ACK
Front hooks — 16
backBack hooks — 0
None.
Checked against OSPD, TWL, CSW, WWF.
How ACK scores
Face value of the 3 tiles in ACK, before any board multiplier.
Tiles you need
| Letter | Needed | In the bag |
|---|---|---|
| a | 1 | 9 |
| c | 1 | 2 |
| k | 1 | 1 |
Drawing exactly these 3 tiles as an opening rack: 1 in 8,983.
What does ACK mean in Scrabble?
noun
technical
In army signalling this once stood for the letter A, and the same word now names the confirmation message a computer sends back to prove data arrived.
Ack was the army's word for that letter long before the phonetic alphabets everybody now knows, and it survives in ack-ack for anti-aircraft fire — the initials said twice. In computing an ack is the message confirming that something arrived, and nothing works without one.
How ACK is used
Countable: an ack, two acks. Chiefly technical and historical.
- The packet was sent again because no ack came back.
- Ack-ack fire kept the bombers high and inaccurate.
- Every message waits for an ack before the next one goes.
- A missing ack looks exactly like a missing message.
- The word ack is older than the computers that use it.
Written for this site: 1 meaning of ACK and 5 example sentences, not copied from a published dictionary.
Words starting with ACK
22 longer words begin with ACK.
Words ending in ACK
Showing 24 of 334 words that end in ACK. Useful as a back hook: play ACK onto a word already on the board.
Words with ACK inside
Showing 24 of 1842 words that contain ACK somewhere in the middle. Words that start with ACK are listed separately above, so nothing is repeated.
Shorter words from the letters in ACK
Common questions about ACK
- Is ACK valid in Words with Friends?
- Yes. Words with Friends accepts ACK, where it scores 10 points. That game keeps its own list, separate from the Scrabble dictionaries.
- How many points is ACK worth?
- ACK is worth 9 points in Scrabble and 10 points in Words with Friends.
- What does ACK mean?
- In army signalling this once stood for the letter A, and the same word now names the confirmation message a computer sends back to prove data arrived.
- What letters can be added to ACK?
- ACK takes 16 hooks: 16 in front and 0 at the end.
Every word you can build from the 3 letters of ACK:
Open ACK in the Word Finder