Use 'burdensome' to express the emotional heaviness of tasks or responsibilities. Taking care of her sick pet became increasingly burdensome.
Pro Tip 2/3
Exaggeration Caution
Don't use 'burdensome' for small inconveniences; it's for significant difficulties. Studying for exams is challenging but not always burdensome.
Pro Tip 3/3
Personal Perspective
'Burdensome' can vary based on personal ability; what's burdensome to one may not be to another. He found the advanced math problems burdensome, while others enjoyed them.