Other forms: dissensions
Dissension is angry disagreement within a group. Sow dissension, dissension in the ranks, open dissension.
The within is what matters: dissension is trouble among people who are supposed to be on the same side. Sow dissension is the fixed phrase, and it accuses somebody of causing it deliberately.
1noundissensionAngry disagreement within a group.
“There was growing dissension within the party over the new leader.”
dissension is a disagreement.
Latin dissensio comes from dissentire, to differ in opinion, from dis- plus sentire, to feel.
Latin
dissensio
Old French
dissension
Middle French
dissention
Middle English
dissencioun
English, today
dissension
Middle English dissencioun, from Middle French dissention, discention, from Old French dissension, from Latin dissensio.
Etymology from Wiktionary, CC BY-SA