1. to sing or play in harmony with other voices or instruments
Usage: music
2. to bring into agreement or make compatible
3. to be in agreement or compatible

Examples

• The choir members learned to harmonise beautifully together.
• She harmonised the melody with a lower vocal part.
• The new policies harmonise with existing regulations.
• We need to harmonise our different approaches to the project.
• The colors in the room harmonise perfectly.
• Their views on education harmonise completely.
• The architect harmonised the modern design with traditional elements.