Accepted guess Not a possible answer B tier for first-turn info

COSTA

COSTA is accepted as a guess but is not on the solver's possible-answer list.

Meaning and pronunciation

Pronunciation: /ˈkɒ.stə//ˈkɑ.stə/

Noun

Synonym of rib.

Noun

A riblike part of a plant or animal, such as a midrib of a leaf or a thickened vein or the margin of an insect wing.

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

Etymology

From pan-Romance (Portuguese Costa, Galician Costa, Spanish Costa, Catalan Costa, Occitan Costa, French Costa, Italian Costa), from Latin costa (“rib; side”).

Source: Wiktionary (CC BY-SA)

How it sounds

Two syllables, stress on the first syllable Say it KAWSTAH.

Related meanings

Synonyms rib

In a sentence

The president of this team is Costa Rican.
© tatoeba.org contributor lucasmg123 (CC BY 2.0 FR)
I am not going to Costa Rica anymore.
© tatoeba.org contributor michu3453 (CC BY 2.0 FR)

Use COSTA in a puzzle

As an opener, it rules out about 94.5% of possible answers.

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

No

The solver does not currently treat this as a possible answer.

Past Wordle answer

No completed appearance

No appearance in our globally completed history. A recent puzzle may still be live elsewhere.

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

How COSTA performs as a guess

Wordle accepts COSTA as a guess, but the solver does not list it as a possible answer.

Played as an opener, it lands at least one colored tile in 85.7% of games, misses completely in 14.3%, and leaves about 130 possible answers on average.

In the previous complete opener benchmark, it ranks #2,121 of 14,855 openers, averaging 3.62 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.

First-turn measures

All four describe COSTA 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.

5.08 Entropy (bits)
130 Avg remaining
0.0% Exact match
94.5% Avg ruled out

As an opening guess: previous benchmark

How COSTA 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.

3.62 Avg guesses
99.96% Solved within six
0.70 Spread of game lengths
#2,121 Rank among openers
Opening with COSTA left 1 of the snapshot's answers unsolved after six guesses. A spread of 0.70 means those games clustered within about 0.70 of a guess of the 3.62 average. It ranks #2,121 of 14,855 openers by average guesses in games solved within six.
1 guess
0
2 guesses
65
3 guesses
972
4 guesses
1,122
5 guesses
176
6 guesses
18

Composition

5/5 unique
2 vowels
Common:
AOST

Feedback chances

Any hit (G/Y)
86%
Green tile
29%
All gray
14%

Feedback distribution

COSTA can come back 104 different ways. These are the most likely, and how many of the possible answers give each one:

342 answers
287 answers
136 answers
121 answers
117 answers
115 answers
96 answers
92 answers
64 answers
60 answers
54 answers
53 answers
48 answers
45 answers
41 answers
39 answers
38 answers
37 answers
30 answers
25 answers
25 answers
25 answers
25 answers
24 answers
22 answers
20 answers
20 answers
19 answers
19 answers
19 answers

Letter-value totals

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

Scrabble

C3O1S1T1A1
Total: 7 points

Words With Friends

Total: 8 points

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

Strategy after playing COSTA

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

Quick reference

Largest feedback groups after playing COSTA:

14% chance
Suggested:
LINER
12% chance
Suggested:
RAILE
6% chance
Suggested:
PLIER

Follow-ups for common patterns

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

14.3% →
LINER 5.91 bits
12.0% →
RAILE 5.40 bits
5.7% →
PLIER 5.38 bits
5.1% →
DRONE 5.22 bits
4.9% →
TRINE 5.34 bits
4.8% →
DROLE 4.63 bits
4.0% →
SHALE 4.65 bits
3.9% →
TALER 4.57 bits
2.7% →
URINE 4.65 bits
2.5% →
SLIER 4.46 bits

Research on COSTA

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

Optimal play

Opening with COSTA, a proven-optimal strategy averages 3.66 guesses and ranks #2,135 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 COSTA can guarantee a solve within six guesses.

Our six-turn simulation says 3.62, at or below the proven-optimal 3.66, 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.

Familiarity and learning

Frequency
COSTA sits in the common band of the wordfreq scale, appearing about 14 times per million words of written English; the band marks it as an everyday word almost every player will know.

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).