15 Letter Words That Start With OS

There are 7+ 15 letter words beginning with OS in our English dictionary. Every 15-letter OS word below is valid in the Scrabble (TWL and SOWPODS), Wordle, and Words With Friends dictionaries, sortable and ready for your next puzzle. You can also browse all words starting with OS.

Popular 15-Letter Words Starting With OS

oscillographies 23
osmoregulations 18
ostensibilities 17
osteoarthritics 20
osteomyelitises 20
osteopathically 25
ostreiculturist 17

All 15-Letter Words Starting With OS (4 words)

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How Common is OS as a Start 15 Letter word?

There are 7 15-letter words starting with OS in English. The average Scrabble score here is 20, with -S endings dominating (71% of them).

Total Words
7
Avg Scrabble Score
20.0
Most Common Ending (71%)
S
Top Vowel Pairs
EO
IE

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15 Letter Words beginning with OS are often very useful for word games like Scrabble and Words with Friends. This list will help you to find the top scoring words to beat the opponent. Word Finder by WordTips gives you a list of words ordered by their word game points of your choice. You might also be interested in 15 Letter Words with OS.

Are you playing Wordle? Try our New York Times Wordle Solver or use the Include and Exclude features on our 15 Letter Words page when playing Dordle, WordGuessr or any other Wordle-like games. They help you guess the answer faster by allowing you to input the good letters you already know and exclude the words containing your bad letter combinations.

Highest-Scoring 15-Letter OS-Words in Scrabble

osteopathically 25
oscillographies 23
osteomyelitises 20
osteoarthritics 20
osmoregulations 18
ostensibilities 17

What is the highest scoring word in Scrabble that starts with OS?

25 Points

The highest scoring word in Scrabble that starts with OS is osteopathically with a total of 25 points.

O 1
S 1
T 1
E 1
O 1
P 3
A 1
T 1
H 4
I 1
C 3
A 1
L 1
L 1
Y 4

FAQ 15 Letter Words That Start With OS

  • How many 15 letter words starting with OS are in the English dictionary?

    There are 7 15-letter words in the English dictionary that start with OS. The average Scrabble score across them is 20.

  • Are there any rare 15 letter words starting with OS worth more in Scrabble?

    Yes. Uncommon 15-letter words like "ostreiculturist", "osteopathically", "osteomyelitises", "osteoarthritics" start with OS and can score big thanks to their unusual letters. "osteopathically" is worth 25 points in Scrabble before any bonus tiles.

  • What are the most common 15 letter words starting with OS?

    Everyday 15-letter words starting with OS include "oscillographies", "osmoregulations", "ostensibilities", "osteoarthritics", "osteomyelitises".

Next to Words Start With OS

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