synonym n. 同義詞 

synonymy n. 同義詞研究；同義詞匯編

synthesis [syn- = together 共；thesis = putting 放置=>“putting together 共置一處” n. the combination of parts into a whole 綜合；綜合物 / I cannot believe that they can achieve a synthesis between dictatorship and anarchism. 我不相信他們能將獨(dú)裁政治與無(wú)政府主義合成一體。

synthesize v. 綜合；合成 

synthetic a. 綜合的；合成的；人造的

下面舉例說(shuō)明syn-的異體的構(gòu)詞規(guī)律。

syllable [ syl- (syn-) = together 共；lable = to take 取=>“l(fā)etters taken together 收取在一塊的字母”→]n . a word or part of a word spoken as a unit 音節(jié) / The word vocabulary has five syllables. Vocabulary這個(gè)詞有五個(gè)音節(jié)。

syllabary n. 音節(jié)表；（日語(yǔ)）五十音圖 

syllabic a. 音節(jié)的；自成音節(jié)的

symbol [ sym- ( syn-) = with 與；bol = to throw 投“sth. thrown out with sth. else 與它物共同投放出來(lái)之物”→]n. sth. that stands for sth. else 象征，象征物 / The olive branch is the symbol of peace. 橄欖枝是和平的象征。

symbolic a. 象征的；象征性的；符號(hào)的 

symbolize v. 把…作為象征；代表 

symbolism n. 象征主義；象征手法

sympathy [ sym- ( syn-) = with 與；pathy = feeling 感情=>“a feeling with or for sb. else 與他人共有的感情 ”→]n. a sharing of another's sorrow or trouble; fellow feeling 同情；同情心 / A good doctor knows that sympathy is just as important as medicine. 好醫(yī)生懂得同情心跟藥物一樣重要。