Words Starting with O and Ending in SIS

Words that start with O and end in SIS will help you land the highest-scoring word when you're playing a word game, like Words With Friends® or Scrabble® GO. We are here to provide you with words that start with O and words that end in SIS, organized alphabetically or by total points.

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14 Letter Words

2 words
omphaloskepsis
onchocerciasis

2 of 2 words

13 Letter Words

2 words
organogenesis
osteonecrosis

2 of 2 words

12 Letter Words

6 words
overemphasis
overanalysis
orthogenesis
otosclerosis
osteogenesis
osteoporosis

6 of 6 words

11 Letter Words

2 words
oncogenesis
ontogenesis

2 of 2 words

10 Letter Words

4 words
oxyuriasis
ornithosis
orogenesis
osteolysis

4 of 4 words

9 Letter Words

1 word
oogenesis

1 of 1 words

8 Letter Words

2 words
orthosis
osteosis

2 of 2 words

7 Letter Words

2 words
osmosis
ostosis

2 of 2 words

5 Letter Words

1 word
oasis

1 of 1 words

Popular word lists starting with O and ending in SIS

Words starting with O and ending in SIS, containing

Words starting with O and ending in SIS, by length

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5 Letter Words Words Containing Letters Words That Start With The Letter Words Ending In The Letter Words By Length Scrabble Cheat Words With Friends Cheat Wordle Helper
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