Is there any easy and less time consuming way of learning paryayvachi or samanarthi shabd and vilom or vipritarthi shabd....Plzz tell if anyone knows any way

Yes

Okay....Thanks....but still...any otger way...as i dont know which can come in my test so. I have to learn them all..

Friend,
Here is a techniqe ,
Everyday before going to bed read some words and sleep. If you do this regularly you will surely remmember.
If it works please put helpful vote .
Regards