adjective
1.
Synonyms: onerous , burdensome, demanding, exacting, exigent, oppressive, superincumbent, taxing, tough, weighty
2.
Synonyms: bitter 2, afflictive, distasteful, galling, painful, unpalatable
3.
Synonyms: grave 3, dangerous, fell, major, serious, ugly
4.
Synonyms: deplorable , afflictive, calamitous, dire, distressing, heartbreaking, lamentable, regrettable, unfortunate, woeful