15 Letter Words Starting with O, Containing S and Ending in S

You're someone who knows what they want, huh? This list of 15 letter words that start with O, contain S and end in S sure makes that pretty clear. Our dictionary has found 82 words that meet your criteria. You can sort the words alphabetically and click on each word to learn the definition.

15 letter words

  1. objectivenesses
  2. obliviousnesses
  3. obnoxiousnesses
  4. obsessionalisms
  5. obsessivenesses
  6. obstructionisms
  7. obtrusivenesses
  8. occasionalities
  9. occlusivenesses
  10. odontostomatous
  11. odoriferousness
  12. offensivenesses
  13. offhandednesses
  14. officiousnesses
  15. omnisexualities
  16. omoplatoscopies
  17. oncogeneticists
  18. onychocryptoses
  19. onychocryptosis
  20. oophorectomises
  21. openendednesses
  22. openheartedness
  23. openmouthedness
  24. operationalises
  25. operationalisms
  26. operationalists
  27. opisthographies
  28. opportunenesses
  29. opsonifications
  30. optimalisations
  31. oraculousnesses
  32. orchesographies
  33. oscillographies
  34. osmoregulations
  35. ostensibilities
  36. osteomyelitises
  37. outspokennesses
  38. overadjustments
  39. overalertnesses
  40. overassessments
  41. overcapitalises
  42. overcentralises
  43. overdiversities
  44. overeagernesses
  45. overearnestness
  46. overembellishes
  47. overenthusiasms
  48. overgeneralises
  49. overharvestings
  50. overhastinesses
  51. overhomogenises
  52. overintensities
  53. overpersuasions
  54. oversweetnesses