passion
Synonym discussion
Sense: noun/1
These words all relate to what people feel inside, but they differ in strength and focus. 'Feeling' is the broad everyday word and can be mild or strong. 'Emotion' is slightly more formal and often names the general category rather than one powerful case. 'Desire' centers on wanting something, sometimes sexually, sometimes for power or success. 'Fervor' is more formal and often appears in religion, politics, or public speech. 'Passion' suggests a feeling so strong that it shapes speech, action, or judgment, and it can be loving, angry, or sexual. You can say 'She spoke with passion about her students', but 'with feeling' is softer. 'His desire for power' stresses wanting; 'his passion for power' sounds more consuming.
Etymology
The word reached English through French forms that came from Late Latin 'passio', built from Latin 'pati', meaning 'to suffer'. It first referred mainly to suffering, especially the suffering of Christ. Later, the meaning widened to include very strong human emotions and then a deep love for an activity or subject.