汉：英语前缀non-意为否定义"not"，但没有int 和 un的否定程度强。
英：prefix meaning "not, lack of," or "sham," 14c., from Anglo-Fr. noun-, from O.Fr. non-, from L. non "not, by no means, not at all, not a," from Old L. noenum "not one" (*ne oinom, from PIE *ne "not" + *oi-no-; see one). In some cases perhaps from M.E. non "not" (adj.), from O.E. nan (see not).
1.Nonaggression
n.Not attacking 不侵略，non=not,ag(ad)=to,gress=go
The U.S.refused to sign the treaty without a nonaggression clause.
美国拒绝在没有互不侵犯的条约上签字。
2.nondescript
adj.not easily describe不可名状的。non=not,de=down,script=write
The man's nondescript features helped him to easily blend him to any crowd.
没有任何特征的外貌使他这容易混入人群。
3.nonplus
n.a state of uncertainty;perplexit 困惑的处境
v.surprise or puzzle somebody so much 使困惑 pul=more
My state of nonplus was made even more confuseing by his last remark.
他最后的发言加剧了我本来就有的困惑。
4.nonsense
n.meaningless words;foolish talk 废话，胡说 re=again,sid=sit
My 97-year old grandmother just lies in bed speaking nonsense all day.
我那97岁的祖母整天只是躺在床上说胡话。