5 FiveLetterWords
Past Wordle answer Possible answer Accepted guess C tier for first-turn info

STACK

Yes, STACK was the Wordle answer on October 11, 2025 (Wordle #1575).

As an opener, it rules out about 91.3% of possible answers.

Open Solver with STACK Open Word Finder

Meaning and pronunciation

Pronunciation: /stæk/

Noun

A pile.

Noun

A smokestack.

Verb

To arrange in a stack, or to add to an existing stack.

“Please stack those chairs in the corner.”

Verb

To arrange the cards in a deck in a particular manner, especially for cheating.

“This is the third hand in a row where you've drawn four of a kind. Someone is stacking the deck!”

Source: Wiktionary contributors · CC BY-SA 4.0. Corrections.

Wordle status

A word can be a playable guess without being a possible answer.

Playable guess

Yes

Included in the Wordle guess list used by our tools.

Possible answer

Yes

Included among the answers considered by the solver.

Past Wordle answer

Used once

Past Wordle answer: October 11, 2025 (#1575).

See the full page for that puzzle: October 11, 2025 (#1575).

The possible-answer list is the solver's current list and may change when Wordle adds new answers.

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How verification and withdrawal work

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How STACK performs as a guess

STACK is a possible answer, so it would solve about one game in 2,374 when every answer is treated as equally likely.

Played as an opener, it lands at least one colored tile in 77.3% of games, misses completely in 22.7%, and leaves about 205 possible answers on average.

In the previous complete opener benchmark, it ranks #3,222 of 14,855 openers, averaging 3.64 guesses in games solved within six turns.

Try your feedback pattern

Tap the tiles to match your feedback, then see the ranked follow-up guesses.

All gray? Tap a tile to cycle gray → yellow → green.
See strategy patterns

Useful pattern pages

If you only know part of the word, start with one of these matching patterns.

S___K S in the 1st position and K in the 5th position S__C_ S in the 1st position and C in the 4th position _T__K T in the 2nd position and K in the 5th position

Explore lists that match the beginning, ending or letters in STACK.

First-turn measures

All four describe STACK used as an opening guess. Entropy is the same idea as “avg ruled out” on a log scale: a higher number means the guess splits the possible answers into more, smaller groups.

4.63 Entropy (bits)
205 Avg remaining
0.04% Exact match
91.3% Avg ruled out
Higher first-turn entropy than about 60% of evaluated openers
1.32 bits below the highest measured first-turn entropy (~5.95 bits)

As an opening guess: previous benchmark

How STACK performed in the previous complete opener benchmark, against its captured answer snapshot. These research figures are separate from today's solver recommendations. See the data page for the method.

3.64 Avg guesses
100% Solved within six
0.68 Spread of game lengths
#3,222 Rank among openers
Opening with STACK solved every answer in the snapshot within six guesses. A spread of 0.68 means those games clustered within about 0.68 of a guess of the 3.64 average. It ranks #3,222 of 14,855 openers by average guesses in games solved within six.
1 guess
1
2 guesses
51
3 guesses
947
4 guesses
1,161
5 guesses
182
6 guesses
12
Top-ranked in the current bounded policy screen: SLANT. The policy minimizes misses within six first, then average guesses among wins (3.46 for the leader). Compare the ranking measures

Composition

5/5 unique
1 vowels
Common:
AST

Feedback chances

Any hit (G/Y)
77%
Green tile
32%
All gray
23%

Example solver route

R O A T E
S L I N K
S T A C K

One example route used by the solver.

This solver benchmark reaches STACK in 3 guesses.

Feedback distribution

STACK can come back 96 different ways. These are the most likely, and how many of the possible answers give each one:

539 answers
272 answers
231 answers
115 answers
109 answers
98 answers
87 answers
83 answers
59 answers
49 answers
46 answers
39 answers
38 answers
35 answers
31 answers
31 answers
29 answers
28 answers
21 answers
20 answers
20 answers
18 answers
17 answers
17 answers
16 answers
16 answers
16 answers
14 answers
14 answers
12 answers

Letter-value totals

Base letter-value totals for STACK; these do not show whether either game accepts the word.

Scrabble

S1T1A1C3K5
Total: 11 points

Words With Friends

Total: 12 points

Scores shown are base values without double/triple letter or word bonuses.

Try next

DROLE MARLE TRITE PLIER TAROT NOIRE

Strategy after playing STACK

What the solver recommends next for each way the board can respond to STACK.

Quick reference

Largest feedback groups after playing STACK:

23% chance
Suggested:
DROLE
11% chance
Suggested:
MARLE
10% chance
Suggested:
TRITE

Follow-ups for common patterns

Ranked follow-up guesses for the 10 most common feedback patterns.

22.7% →
DROLE 6.07 bits
11.5% →
MARLE 5.33 bits
9.7% →
TRITE 5.50 bits
4.8% →
PLIER 5.13 bits
4.6% →
TAROT 4.55 bits
4.1% →
NOIRE 5.34 bits
3.7% →
DROLE 4.89 bits
3.5% →
ROUSE 5.17 bits
2.5% →
CAROL 4.70 bits
2.1% →
ROUSE 4.52 bits

Research on STACK

Game-tree analysis and word research for STACK, with an explanation for each figure.

Optimal play

Opening with STACK, a proven-optimal strategy averages 3.70 guesses and ranks #4,919 of 14,855 legal openers. The best proven opener, TARSE, averages 3.55.

No guaranteed hard-mode solve In hard mode, no strategy that opens with STACK can guarantee a solve within six guesses.

Our six-turn simulation says 3.64, at or below the proven-optimal 3.70, because the two figures score different answer lists.

These figures come from exhaustive game-tree search and are exact for the NYT lists of July 2023 (3,158 answers). They do not use the site's working answer pool.

How it sounds

One syllable Say it STAK.

Rhymes with BLACK TRACK CRACK SNACK SLACK

Related meanings

In WordNet's sense inventory, STACK is a kind of pile or amount.

Synonyms lot deal mass mountain plenty mess

Familiarity and learning

Frequency
STACK sits in the common band of the wordfreq scale, appearing about 11 times per million words of written English; the band marks it as an everyday word almost every player will know.
Learner level
Appears in intermediate learner vocabulary (CEFR-J level B2); a word learners usually reach after the basics.
Age of acquisition
Typically learned around age 7, by Glasgow Norms speaker ratings.
Imageability
Imageability score: 66 of 100. Raters gave it a middle-range score.
Dominant sense
Lancaster raters associated it most strongly with sight (3.9 of 5).

In a sentence

Add this to your stack.
© tatoeba.org contributor Eccles17 (CC BY 2.0 FR)
The book was at the bottom of the stack.
© tatoeba.org contributor MarijnKp (CC BY 2.0 FR)

Sources: Optimal-play values: Alex Selby's exhaustive Wordle analysis (MIT); Pronunciation: CMU Pronouncing Dictionary (BSD); Word relations: Open English WordNet, 2025 edition (CC BY 4.0); Word frequency: wordfreq (data CC BY-SA 4.0); Learner levels: CEFR-J Wordlist ver 1.5, Tono Laboratory, TUFS; Glasgow Norms (CC BY 4.0); Lancaster Sensorimotor Norms (CC BY 4.0).