Synonyms of challenging in English:

challenging


See definition of challenging

adjective

1‘an interesting, worthwhile, and challenging job’

SYNONYMS
demanding, testing, taxing, exacting, exigent, searching
stretching, exciting, stimulating, inspiring, energizing, inspirational
difficult, tough, hard, heavy, stiff, formidable, onerous, arduous, laborious, burdensome, strenuous, gruelling
ANTONYMS

easy, uninspiring