1. in a way that requires great physical or mental effort; demandingly

Examples

• The hike was taxingly steep and left everyone breathless.
• She worked taxingly long hours to meet the deadline.
• The math problems were taxingly complex for most students.
• The marathon was taxingly difficult in the summer heat.
• He spoke taxingly slowly, making the lecture feel endless.
• The project proved taxingly expensive for the small company.