Insidious (adjective) دغا باز، سازشی، پرفریب
proceeding in a gradual, subtle way, but with very harmful effects.
Example: “sexual harassment is a serious and insidious problem”
Synonyms: stealthy, subtle, surreptitious, sneaking, cunning, crafty, Machiavellian, artful, guileful
Antonyms: straightforward
Stymie (verb) روڑے اٹکانا، رکاوٹ ڈالنا، روکنا
prevent or hinder the progress of.
Example: “the changes must not be allowed to stymie new medical treatments”
Synonyms: impede, interfere with, hamper, hinder, obstruct, inhibit, frustrate, thwart, foil, spoil
Antonyms: assist, help
