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15-letter words starting with B

15-letter words starting with B number 127, led by benzodiazepines, the highest scorer at 38 points.

127 wordsTop pick BENZODIAZEPINESHighest score BENZODIAZEPINES 38

P starts the most 15-letter words (695); Y starts the fewest (2). B ranks #15 of 26. The bar under each letter shows the size of its list.

Best words to play first 127 · most-used first

  • BENZODIAZEPINES38
  • BIOAVAILABILITY25
  • BIBLIOGRAPHICAL27
  • BIOLUMINESCENCE23
  • BACTERIOLOGICAL22
  • BIOGEOCHEMISTRY28
  • BIOACCUMULATION23
  • BIOTECHNOLOGIES23
  • BISPHOSPHONATES27
  • BRONCHODILATORS23
  • BIOSTRATIGRAPHY26
  • BIOGEOGRAPHICAL26
  • BACTERIOLOGISTS20
  • BIOSTATISTICIAN19
  • BRACHIOCEPHALIC31
  • BUSINESSPERSONS19
  • BIOMECHANICALLY29
  • BIDIRECTIONALLY23
  • BIOTECHNOLOGIST23
  • BLAMEWORTHINESS25
  • BIOACCUMULATIVE26
  • BITTERSWEETNESS20
  • BROADMINDEDNESS22
  • BLOODTHIRSTIEST21
  • BRACHIOSAURUSES22
  • BEAUTIFICATIONS22
  • BRACHISTOCHRONE27
  • BIOPSYCHOLOGIST28
  • BIOASTRONAUTICS19
  • BIORHYTHMICALLY33
  • BLOODCURDLINGLY25
  • BUREAUCRATIZING29
  • BACCHANALIANISM26
  • BACKSCATTERINGS26
  • BACKSCRATCHINGS31
  • BACTERIOPHAGIES25
  • BACTERIOPHAGOUS25
  • BALNEOTHERAPIES22
  • BARBAROUSNESSES19
  • BAREFACEDNESSES23
  • BASIDIOMYCETOUS25
  • BASTARDISATIONS18
  • BASTARDIZATIONS27
  • BATHOMETRICALLY27
  • BATHYMETRICALLY30
  • BATRACHOPHOBIAS29
  • BEARDLESSNESSES18
  • BEAUTEOUSNESSES17

Showing the top 48 of 127 words. See every valid word

All valid words 127

A to Z. Includes rare and Collins-only words. Linked tiles open the word's meaning, score and rhymes.

  • BACCHANALIANISM26
  • BACKSCATTERINGS26
  • BACKSCRATCHINGS31
  • BACTERIOLOGICAL22
  • BACTERIOLOGISTS20
  • BACTERIOPHAGIES25
  • BACTERIOPHAGOUS25
  • BALNEOTHERAPIES22
  • BARBAROUSNESSES19
  • BAREFACEDNESSES23
  • BASIDIOMYCETOUS25
  • BASTARDISATIONS18
  • BASTARDIZATIONS27
  • BATHOMETRICALLY27
  • BATHYMETRICALLY30
  • BATRACHOPHOBIAS29
  • BEARDLESSNESSES18
  • BEAUTEOUSNESSES17
  • BEAUTIFICATIONS22
  • BEAUTIFULNESSES20
  • BEHAVIOURALISTS23
  • BELIEVABILITIES22
  • BELONGINGNESSES19
  • BENIGHTEDNESSES22
  • BENZANTHRACENES31
  • BENZENECARBONYL33
  • BENZODIAZEPINES38
  • BESEEMINGNESSES20
  • BESPOTTEDNESSES20
  • BIBLIOGRAPHICAL27
  • BIBLIOPHILISTIC26
  • BIBLIOTHECARIES24
  • BIBLIOTHERAPIES24
  • BIDIALECTALISMS22
  • BIDIRECTIONALLY23
  • BIGHEADEDNESSES23
  • BIOACCUMULATING24
  • BIOACCUMULATION23
  • BIOACCUMULATIVE26
  • BIOACOUSTICIANS21
  • BIOASTRONAUTICS19
  • BIOAVAILABILITY25
  • BIOCONTAINMENTS21
  • BIODEGRADATIONS20
  • BIODESTRUCTIBLE22
  • BIOECOLOGICALLY25
  • BIOENGINEERINGS19
  • BIOEQUIVALENCES31
  • BIOGEOCHEMICALS27
  • BIOGEOCHEMISTRY28
  • BIOGEOGRAPHICAL26
  • BIOLUMINESCENCE23
  • BIOMATHEMATICAL26
  • BIOMECHANICALLY29
  • BIOPROSPECTINGS24
  • BIOPSYCHOLOGIES28
  • BIOPSYCHOLOGIST28
  • BIOREGIONALISMS20
  • BIOREGIONALISTS18
  • BIOREMEDIATIONS20
  • BIORHYTHMICALLY33
  • BIOSTATISTICIAN19
  • BIOSTRATIGRAPHY26
  • BIOSYSTEMATISTS22
  • BIOTECHNOLOGIES23
  • BIOTECHNOLOGIST23
  • BIPARTISANSHIPS24
  • BIPOLARISATIONS19
  • BIPOLARIZATIONS28
  • BISPHOSPHONATES27
  • BISYMMETRICALLY29
  • BITTERSWEETNESS20
  • BITUMINISATIONS19
  • BITUMINIZATIONS28
  • BLAMEABLENESSES21
  • BLAMELESSNESSES19
  • BLAMEWORTHINESS25
  • BLASPHEMOUSNESS24
  • BLAXPLOITATIONS26
  • BLETHERANSKATES24
  • BLOCKHEADEDNESS28
  • BLOODCURDLINGLY25
  • BLOODGUILTINESS19
  • BLOODLESSNESSES18
  • BLOODTHIRSTIEST21
  • BOUGAINVILLAEAS21
  • BOULEVERSEMENTS22
  • BOUNDLESSNESSES18
  • BOUNTEOUSNESSES17
  • BOUNTIFULNESSES20
  • BOURGEOISIFYING25
  • BOUSTROPHEDONIC25
  • BOWDLERISATIONS21
  • BOWDLERIZATIONS30
  • BRACHIOCEPHALIC31
  • BRACHIOSAURUSES22
  • BRACHISTOCHRONE27
  • BRACHYCEPHALICS34
  • BRACHYCEPHALIES32
  • BRACHYCEPHALISM34
  • BRACHYCEPHALOUS32
  • BRACHYDACTYLIES31
  • BRACHYDACTYLISM33
  • BRACHYDACTYLOUS31
  • BRACHYDIAGONALS27
  • BRACHYPINAKOIDS32
  • BRACHYTHERAPIES30
  • BRAINLESSNESSES17
  • BRAINSICKNESSES23
  • BRAUNSCHWEIGERS26
  • BREAKABLENESSES23
  • BREATHABILITIES22
  • BREATHARIANISMS22
  • BREMSSTRAHLUNGS23
  • BRILLIANTNESSES17
  • BROADMINDEDNESS22
  • BROKENHEARTEDLY28
  • BRONCHIOLITISES22
  • BRONCHODILATORS23
  • BRONCHOGRAPHIES28
  • BRONCHOSCOPICAL28
  • BRONCHOSCOPISTS26
  • BROTHERLINESSES20
  • BUMPTIOUSNESSES21
  • BUREAUCRATISING20
  • BUREAUCRATIZING29
  • BUSINESSPERSONS19
Letters by positionIn 71% of these words the 15th letter is S.
2nd letter
  1. I35%
  2. R23%
  3. A13%
3rd letter
  1. O34%
  2. A20%
  3. S6%
12th letter
  1. I27%
  2. S20%
  3. A9%
13th letter
  1. S25%
  2. I24%
  3. O15%
14th letter
  1. E32%
  2. N15%
  3. L9%
15th letter
  1. S71%
  2. Y9%
  3. L5%

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses
Score spreadMost of these words score 22 in Scrabble; BENZODIAZEPINES tops the list with 38. Scores before board bonuses.
  1. 1717 points: 4 words
  2. 18 points: 5 words
  3. 1919 points: 10 words
  4. 20 points: 11 words
  5. 2121 points: 7 words
  6. 22 points: 14 words
  7. 2323 points: 12 words
  8. 24 points: 7 words
  9. 2525 points: 9 words
  10. 26 points: 10 words
  11. 2727 points: 7 words
  12. 28 points: 9 words
  13. 2929 points: 4 words
  14. 30 points: 3 words
  15. 3131 points: 6 words
  16. 32 points: 3 words
  17. 3333 points: 3 words
  18. 34 points: 2 words
  19. 3535 points: 0 words
  20. 36 points: 0 words
  21. 3737 points: 0 words
  22. 38 points: 1 words
WordScrabbleWords With FriendsDictionaries
BENZODIAZEPINES3842All three
BRACHYCEPHALICS3437Collins only
BRACHYCEPHALISM3437Collins only
BIORHYTHMICALLY3334Collins only
BENZENECARBONYL3339Collins only
BRACHYDACTYLISM3335Collins only
BRACHYCEPHALIES3234All three
BRACHYCEPHALOUS3235Collins · NWL
BRACHYPINAKOIDS3234Collins only
BRACHIOCEPHALIC3135Collins · NWL
BENZANTHRACENES3135All three
BACKSCRATCHINGS3136Collins only

This group runs toward technical vocabulary: bioavailability, bioluminescence, and bacteriological all appear among the examples. None of the entries rank as common words by the frequency cutoff. The count is small beside the biggest starting-letter groups: P has 695 entries and C has 601.

What stands out among these 127 entries?

  • The collection has 127 fifteen-letter words beginning with B.
  • Benzodiazepines leads the score list at 38 points.
  • Ninety entries end in S, more than any other final letter.
  • Collins includes 121 entries; NWL2023 includes 87.
  • No entries meet the common-word frequency cutoff.

Which B words score highest?

Benzodiazepines tops the scoring list at 38 points. Brachycephalics and brachycephalism follow at 34 each, while biorhythmically and benzenecarbonyl score 33 apiece. The leaders are specialized terms, so check that your game accepts one before planning a play around it.

The average score is 24.3 points across this set. Long words can look tempting, but a high letter total does not guarantee a strong board move; placement and premium squares affect the result. Make sure you can fit the word before committing your rack.

Bioaccumulation and biotechnologies offer more recognizable scientific vocabulary than the rare scoring leaders. Their length is still the practical hurdle: a fifteen-letter word needs a long opening or a suitable stretch of the board. The unusual terms can earn attention, but a legal placement comes first.

How many 15-letter words starting with B end in S?

Ninety of the 127 words end in S, far more than any other final letter. Y comes next with 12, and L appears six times. Benzodiazepines, bisphosphonates, and bronchodilators show how often technical terms in this group take a plural ending.

Dictionary coverage shifts by game: Collins has 121 entries, NWL2023 has 87, and ENABLE has 65.

These collections overlap, so their counts cannot be added to make a larger total. Many entries are uncommon, making a quick dictionary check the sensible limit on any play. For a different opening letter, P and C have much larger fifteen-letter groups.

Questions people ask

What is the highest-scoring 15-letter word starting with B?
Benzodiazepines is the highest-scoring entry, at 38 points. Brachycephalics and brachycephalism are next at 34 points each. Those totals stand out, but board placement and the dictionary used by your game still determine whether a play works.
How many of these B words end in S?
Ninety of the 127 words end in S, making it the most common final letter by a wide margin. The next most frequent ending is Y, with 12 words. Examples ending in S include benzodiazepines, bisphosphonates, and bronchodilators.
Are all 127 words accepted in every word game?
No. Collins has 121 entries, NWL2023 has 87, and ENABLE has 65. The collections overlap, and a word accepted in one tournament list may not appear in another. Check the specific word list used by your game before playing an unfamiliar technical term.

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