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10 Letter Words Starting With O

There are 2226 valid 10 letter words that start with O, drawn from NWL2023, CSW24, and Words With Friends. Sorted below by score, with the single highest scorer called out.

Highest Scoring 10-Letter Words

US Scrabble (NWL)

oathworthy - 22 points

UK Scrabble (CSW)

oathworthy - 22 points

Words With Friends

obambulate - 21 points

10 Letter Words (2226)

View all words starting with O

Top 20 Highest-Scoring 10 Letter Words Starting With o

Point values shown for US Scrabble, UK Scrabble, and Words With Friends. The average across this full 2226 word list is 49.5 combined points.

Rank Word US Scrabble UK Scrabble WWF Points Total
#1 oafishness 16 16 16 48
#2 oakenshaws 20 20 20 60
#3 oakinesses 14 14 15 43
#4 oariopathy 18 18 17 53
#5 oasthouses 13 13 13 39
🏆 #6 oathworthy 22 22 19 63
#7 obambulate 16 16 21 53
#8 obbligatos 15 15 19 49
#9 obduracies 15 15 18 48
#10 obdurately 16 16 18 50
#11 obdurating 14 14 18 46
#12 obduration 13 13 16 42
#13 obediences 15 15 18 48
#14 obediently 16 16 18 50
#15 obeisances 14 14 17 45
#16 obeisantly 15 15 17 47
#17 obeliscoid 15 15 18 48
#18 obelisking 17 17 21 55
#19 obeliskoid 17 17 19 53
#20 obesogenic 15 15 19 49

Where 10 Letter Words Fit on the Board

At 10 letters, a word almost always uses your entire rack plus tiles already on the board these are realistically bingo-adjacent plays rather than everyday moves, which is why the list leans heavily on compound and suffixed forms (-nesses, -ation, -izing). If you're looking for words you can play more often, shorter lengths starting with O will give you far more flexible options try 10 letter words starting with O for a more practical middle ground.

Frequently Asked Questions

What is the highest-scoring 10 letter word starting with o?

oathworthy — worth 63 combined points (US Scrabble: 22, UK Scrabble: 22, Words With Friends: 19).

How many 10 letter words start with o?

2226 valid words, combining entries from NWL2023, CSW24, and the Words With Friends dictionary.

Are 10 letter words realistic to actually play?

Only occasionally — you'd need most of your rack plus letters already on the board to reach 10 tiles. They're worth knowing for the rare bingo-extension play, but for regular turns, shorter o words will come up far more often.