It's always hard to remember words, even more than that is to recall when situation arises. One thing one needs to Understand is in order to keep them in mind one should connect it with certain situations. There are following tips and strategies that are gonna help you to polish your language by using variety of words and vocabulary. There are following methods that can be beneficial:
i. Learn, Ideantify and connect with the help of suffix and prefix. This will help you getting it cleared. For example, reconsider, reevaluate. In this example "re" is prefix which gives same meaning and sense
ii. Try and inculcate habit of reading newspaper and magazine which will help you in getting revision and recollection of words and vocabulary.
iii. Never learn words in isolation, try and connect them in a group, synonyms. Antonyms or sane family words etc.
iv. Make flash cards and write down words on. It, and try and remember and connect in daily life.