1. without a map; not having or using a map for navigation or reference
Usage: often used to describe navigation or travel without traditional cartographic aids
2. not shown or represented on a map
Usage: describes places or features that do not appear on existing maps

Examples

• The explorers ventured into the mapless wilderness with only a compass.
• She preferred mapless navigation, relying instead on local knowledge and landmarks.
• The remote region remained largely mapless until the recent survey.
• Hikers sometimes enjoy mapless trails to challenge their sense of direction.
• The mapless territory was difficult for the expedition to traverse safely.