同文网《英语词缀词根大全》以中高考及四六级考试大纲要求掌握的词汇为主，通过拓展同义前缀、同义后缀和同义词根，共收录了905个前缀、后缀及例句和练习题，可帮助读者了解单词的构词规律，是一部小型但内容丰富、功能实用的精编语言工具书。
| sever |
sid |
sight |
sign |
simil, simul, sembl |
| simil, simul, sembl |
simil, simul, sembl |
sinu |
sist |
soci |
| sol |
sol |
solv, solu, solut |
solv, solu, solut |
solv, solu, solut |
| som |
somn |
son |
soph |
sort |
| speci |
spect, spic |
spect, spic |
sper |
spers |
| spin |
spir |
splend |
spond, spons |
spond, spons |
| st, sta, stat, stan, stant, stin |
st, sta, stat, stan, stant, stin |
st, sta, stat, stan, stant, stin |
st, sta, stat, stan, stant, stin |
st, sta, stat, stan, stant, stin |
| st, sta, stat, stan, stant, stin |
stall |
stell |
stigm |
still |
| sting, stinct, stimul |
sting, stinct, stimul |
sting, stinct, stimul |
stitut, stit |
stitut, stit |
| strain, strict, string |
strain, strict, string |
strain, strict, string |
strat |
struct |
| sult |
sum, summ |
sum, summ |
sum, sumpt |
sum, sumpt |
| sur |
surg |
tach |
tact, tag, tig, ting |
tact, tag, tig, ting |