On high Definition 1 of 3Pro Tip 1/3Nature Imagery Use 'on high' to describe things at a great height, often regarding nature and outdoors. Eagles often fly on high, surveying their territory. Pro Tip 2/3Poetic Tone The phrase adds a poetic or majestic tone when describing scenes in literature or music. The choir sang of angels on high in their hymn. Pro Tip 3/3Visually Striking 'On high' often indicates a striking visual element, especially from a lower viewpoint. The mountaintop castle stood on high, visible for miles.