81. real, true  

real 真的,真实的,指的是事实上存在而不是想象的,例:real gold
true 真的,真正的,指的是事实和实际情况相符合,例:a true story

82. respectful, respectable  

respectful 尊敬,有礼貌,例:be respectful to the aged
respectable 可敬的,值得尊敬的。

83. outwards, outward  

二者均可用作副词,表示向外,外面;
outward 还可用作形容词,例:an outward voyage

84. pleasant, pleased, pleasing  

pleasant 常用作定语;
pleased, pleasing 常用作表语;
pleased 主语常为人,pleasing 主语常为物,例:a pleasant trip; The trip is pleasing.

85. understanding, understandable  

understanding 明白事理的,能体谅的,例:an understanding girl
understandable 可理解的,能够懂的,例:an understandable mistake