This list includes 7 Emotions that start with O, ranging from “Obsession” to “Overwhelm”. They cover common and nuanced feeling states you can use for writing, teaching, therapy, or study.

Emotions that start with O are feelings whose labels begin with the letter O, ranging from mild to intense. Several O-words, such as “obsession”, appear frequently in literature and film as compelling emotional themes.

Below you’ll find the table with Emotion, Type, Definition, and Example.

Emotion: Use this column to find the exact emotion word you need for writing, study, or describing a feeling.

Type: Shows whether the emotion is Positive, Negative, or Neutral, helping you choose tones and contexts quickly.

Definition: One-sentence explanation of the emotion so you quickly understand its meaning and nuance.

Example: Short sentence showing the emotion in context, so you can see how it’s used naturally.

Emotions that start with O

EmotionTypeSynonymsExample
OptimismPositivehopefulness; confidenceShe faced the interview with quiet optimism.
OutrageNegativeanger; indignationThe decision provoked widespread public outrage.
OffenseNegativehurt; insulted feelingHe took offense at her careless remark.
ObsessionNegativepreoccupation; fixationHer obsession with checking messages disrupted her day.
OverwhelmMixedinundation; swampedA sense of overwhelm hit me after the long meeting.
Open-heartednessPositivewarmth; generosityHer open-heartedness made strangers feel immediately welcome.
Oceanic feelingMixedmystical unity; boundlessnessOn the hike he experienced an oceanic feeling of oneness.

Descriptions

Optimism
A tendency to expect good outcomes; boosts motivation and resilience in uncertain situations.
Outrage
Intense moral anger and shock when rules or values are violated; often drives demand for accountability.
Offense
Feeling hurt, insulted, or resentful after a perceived slight; ranges from mild irritation to deep resentment.
Obsession
Repetitive, intrusive thoughts or urges that dominate attention and often cause distress or distraction.
Overwhelm
Feeling flooded or crushed by emotions, information, or demands; can be positive (joy) or negative (stress).
Open-heartedness
A warm, giving emotional stance toward others; involves vulnerability, empathy, and willingness to connect.
Oceanic feeling
A profound sense of unity or boundary dissolution often described in mystical experiences and some psychological accounts.
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