oppressive

adj.

[1]	burdensome , overpowering , overwhelming , onerous , heavy , cumbersome , exhausting , racking , unbearable , intolerable , agonizing , unendurable , harsh , brutal , severe , tyrannical , repressive , dispiriting , depressing , disheartening , discouraging , grievous , distressing , dolorous , miserable , harrowing , wretched
[2]	suffocating , tyrannical , tyrannous , stifling , stuffy , close , airless , unventilated , uncomfortable