170+ Negative Words That Start With O (Negative Adjectives)

If you want to learn about negative words that start with O, you are in the right place, here is a list of the most common negative words. Delving into the darker side of the alphabet, one discovers a host of words with negative connotations that can express a range of undesirable states or qualities.

when examining the letter ‘O’, a myriad of negative words unfold, each carrying its unique shade of adversity or misfortune. Here we will uncover one hundred of these words, each beginning with the ominous ‘O’.

List of Negative Words That Start With O

  1. Objectionable – Offensive
  2. Oblivious – Unaware
  3. Obnoxious – Annoying
  4. Obscene – Indecent
  5. Obscure – Unclear
  6. Obsequious – Servile
  7. Obstinate – Stubborn
  8. Obstructive – Hindering
  9. Obtuse – Dull
  10. Ominous – Foreboding
  11. Oppressive – Tyrannical
  12. Outrageous – Shocking
  13. Overbearing – Dominating
  14. Overcritical – Judgmental
  15. Overzealous – Fanatical
  16. Overwrought – Agitated
  17. Overtired – Exhausted
  18. Overworked – Exploited
  19. Oversensitive – Touchy
  20. Overshadow – Dominate
  21. Overpriced – Expensive
  22. Overlook – Miss
  23. Overkill – Excessive
  24. Overdue – Late
  25. Overcast – Cloudy
  26. Outdated – Obsolete
  27. Outlaw – Criminal
  28. Outcry – Protest
  29. Outburst – Eruption
  30. Outcast – Reject
  31. Outrage – Anger
  32. Outsmart – Deceive
  33. Ouster – Expulsion
  34. Outwit – Trick
  35. Oversight – Error
  36. Overstate – Exaggerate
  37. Overt – Obvious
  38. Oversell – Hype
  39. Outmoded – Antiquated
  40. Outmaneuver – Outsmart
  41. Outfox – Outsmart
  42. Outweigh – Surpass
  43. Outlive – Survive
  44. Outdistance – Surpass
  45. Outstrip – Excel
  46. Outshine – Eclipse
  47. Outrank – Surpass
  48. Outdo – Surpass
  49. Oust – Expel
  50. Outflank – Bypass
  51. Outlandish – Bizarre
  52. Ordeal – Trial
  53. Opprobrium – Disgrace
  54. Opponent – Adversary
  55. Opportunistic – Selfish
  56. Opacity – Darkness
  57. Ossify – Harden
  58. Ornery – Stubborn
  59. Ostracize – Exclude
  60. Outcry – Uproar
  61. Outright – Complete
  62. Outpace – Exceed
  63. Outsize – Huge
  64. Otherworldly – Supernatural
  65. Offend – Insult
  66. Offensive – Insulting
  67. Offputting – Repellent
  68. Oily – Unctuous
  69. Oafish – Clumsy
  70. Obtuse – Dense
  71. Odd – Strange
  72. Onerous – Burdensome
  73. Odious – Repulsive
  74. Oddity – Weirdness
  75. Offshoot – Derivative
  76. Offset – Counteract
  77. Offhand – Dismissive
  78. Offend – Upset
  79. Offering – Proposal
  80. Officer – Official
  81. Officious – Meddlesome
  82. Ogle – Leer
  83. Old-fashioned – Outdated
  84. Ominous – Menacing
  85. Omission – Exclusion
  86. One-sided – Biased
  87. Onslaught – Attack
  88. Onus – Burden
  89. Opaque – Nontransparent
  90. Open-ended – Unfinished
  91. Operatic – Theatrical
  92. Opine – Comment
  93. Oppress – Subjugate
  94. Opt – Choose
  95. Opt-out – Withdraw
  96. Orbit – Path
  97. Ordain – Decree
  98. Order – Command
  99. Ordinary – Commonplace
  100. Organize – Arrange

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Negative Adjectives That Start With O

With the power of language, mere Adjectives can paint a mood, often in shades darker than intended. In this next part, we reveal fifty negative Adjectives that start with ‘O’, each one casting a shadow in its own right.

  1. Obdurate – Stubborn
  2. Obese – Overweight
  3. Objurgatory – Scolding
  4. Oblivious – Unaware
  5. Obnoxious – Disagreeable
  6. Obscene – Indecent
  7. Obscurant – Hiding
  8. Obscure – Unknown
  9. Obsequious – Servile
  10. Obsolescent – Outdated
  11. Obstinate – Unyielding
  12. Obstructive – Blocking
  13. Obtrusive – Intrusive
  14. Obtuse – Stupid
  15. Occasional – Infrequent
  16. Ocherous – Yellowish
  17. Odious – Hateful
  18. Off-color – Inappropriate
  19. Offensive – Insulting
  20. Offhand – Casual
  21. Officious – Meddlesome
  22. Ominous – Threatening
  23. Opaque – Unclear
  24. Opinionated – Biased
  25. Oppressive – Cruel
  26. Optimistic – Hopeful
  27. Oracular – Prophetic
  28. Ordinary – Plain
  29. Organic – Natural
  30. Oriented – Directed
  31. Original – First
  32. Ornate – Decorative
  33. Ornery – Bad-tempered
  34. Orthodox – Conventional
  35. Ossified – Hardened
  36. Otherworldly – Unreal
  37. Outbound – Departing
  38. Outdated – Old
  39. Outlandish – Weird
  40. Outrageous – Shocking
  41. Outright – Complete
  42. Outspoken – Frank
  43. Outward – External
  44. Overbearing – Domineering
  45. Overblown – Exaggerated
  46. Overcautious – Timid
  47. Overconfident – Arrogant
  48. Overdone – Excessive
  49. Overdramatic – Theatrical
  50. Overeager – Impatient

Negative Adjectives That Start With O

Negative Words That Start With O With Meaning And Examples

  • Objectionable

Meaning: Offensive
Her remarks were objectionable.

  • Obnoxious

Meaning: Annoying
He is incredibly obnoxious.

  • Ominous
    Meaning: Foreboding
    Skies look dark and ominous.
  • Oppressive

Meaning: Burdensome
The heat was absolutely oppressive.

  • Obtuse

Meaning: Dull-witted
His response was rather obtuse.

  • Odious

Meaning: Repulsive
The odor was simply odious.

  • Overbearing

Meaning: Dominating
Her tone was too overbearing.

Obdurate
Meaning: Stubborn
He remained completely obdurate.

  • Offensive

Meaning: Disagreeable
Found his joke quite offensive.

  • Ornery

Meaning: Bad-tempered
The old man was ornery.

  • Outrageous

Meaning: Shocking
Prices these days are outrageous.

  • Ostentatious

Meaning: Showy
Her style is rather ostentatious.

  • Outdated

Meaning: Obsolete
Such ideas are now outdated.

  • Overcritical

Meaning: Judgmental
Stop being so overcritical.

  • Overzealous

Meaning: Excessive
Fans were extremely overzealous.

  • Overwrought

Meaning: Overwhelmed
She seemed quite overwrought.

  • Oblique

Meaning: Indirect
His hints were too oblique.

  • Onerous

Meaning: Burdensome
The task was deeply onerous.

  • Outlandish

Meaning: Bizarre
His idea was too outlandish.

  • Overblown

Meaning: Exaggerated
The story felt overblown.

  • Oafish

Meaning: Clumsy
His manners were oafish.

  • Outcast

Meaning: Exiled
He was an unwanted outcast.

  • Overworked

Meaning: Exhausted
The staff is visibly overworked.

  • Overwhelmed

Meaning: Overpowered
She looked completely overwhelmed.

  • Overshadowed

Meaning: Dimmed
Her success was sadly overshadowed.

  • Outrage

Meaning: Fury
The decision caused an outrage.

  • Obstructive

Meaning: Hindering
His behavior was quite obstructive.

  • Obscene

Meaning: Indecent
The graffiti was purely obscene.

  • Offhand

Meaning: Dismissive
His comment was too offhand.

  • Outspoken

Meaning: Blunt
She is notoriously outspoken.

  • Ossified

Meaning: Hardened
His attitudes were ossified.

  • Obliterated

Meaning: Destroyed
The building was completely obliterated.

  • Opprobrious

Meaning: Disgraceful
His conduct was truly opprobrious.

  • Overdone

Meaning: Excessive
The decorations were simply overdone.

  • Oblivious

Meaning: Unaware
He seems totally oblivious.

  • Obnoxious

Meaning: Unpleasant
The sound was particularly obnoxious.

  • Obstruct

Meaning: Block
The car would obstruct traffic.

  • Obsolescent

Meaning: Dated
Such technology is obsolescent.

  • Offish

Meaning: Unfriendly
Her attitude was somewhat offish.

  • Oppressive

Meaning: Tyrannical
The regime is absolutely oppressive.

  • Outcry

Meaning: Uproar
The verdict prompted an outcry.

  • Overcast

Meaning: Cloudy
The morning was darkly overcast.

  • Overlook

Meaning: Neglect
You just overlook important details.

  • Overtired

Meaning: Fatigued
The driver was clearly overtired.

  • Overuse

Meaning: Excessive
Constant overuse damages phones.

  • Oxidize

Meaning: Corrode
Metals can easily oxidize.

  • Opaque

Meaning: Unclear
His instructions were very opaque.

  • Overwhelm

Meaning: Engulf
News can sometimes overwhelm.

  • Oversight

Meaning: Error
That was a serious oversight.

  • Obfuscate

Meaning: Confuse
Politicians often intentionally obfuscate.

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