GRE备考提升记单词效率4个实用方法思路详解

　　118. doubtable / redoubtable

　　redoubtable: If you describe someone as redoubtable, you respect them because they have a very strong character, even though you are slightly afraid of them.

　　119. impair / repair

　　120. obtrude / obtuse

　　obtrude: When something obtrudes or when you obtrude it, it becomes noticeable in an undesirable way. (LITERARY)(强⾏)

　　obtuse: Someone who is obtuse has difficulty understanding things. (FORMAL)