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).
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.
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.
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.
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.
这二个前缀分别来源于拉丁语 nonus/novem 第九，九，前缀non-除了表示第九外，还是一个否定前缀，这一点在不了解它们来源的前提下容易搞混。
1.nonagon [nona-九 + gon 角]
2.nonamer [nona-九 + mer聚物]
3.nonary [nona- 九 + -ry 后缀]
4.nonode [non- 九 + ode 后缀极管 ]