1. A way of life marked by continuous difficulties, obstacles, or struggles that test one's resilience and character
Despite her challenging existence, she maintained a positive outlook on life.
Apesar de sua existência desafiadora, ela manteve uma perspectiva positiva sobre a vida.
2. The state of living through adversity or demanding circumstances
His challenging existence in poverty taught him valuable life lessons.
Sua existência desafiadora na pobreza lhe ensinou lições valiosas de vida.