oppressive[adjective]Synonyms:- tyrannical, brutal, cruel, despotic, harsh, inhuman, repressive, severe, unjust
- sultry, airless, close, muggy, stifling, stuffy 
Antonyms: unoppressive
 [TahlilGaran] English Synonym Dictionary ▲
 op‧pres‧sive /əˈpresɪv/ 
 adjective1.  powerful, cruel, and unfair: 
 an oppressive military regime2.
 an oppressive military regime2.  weather that is oppressive is unpleasantly hot with no movement of air: 
 the oppressive heat of the afternoon3.
 the oppressive heat of the afternoon3.  a situation that is oppressive makes you unhappy, worried, or uncomfortable: 
 an oppressive silence
 an oppressive silence an oppressive atmosphere—oppressively adverb
 an oppressive atmosphere—oppressively adverb  [TahlilGaran] Dictionary of Contemporary English ▲