simulate v.伪装;扮演 [L simulare

sinecure n.闲差事 [L sine cura without care]

sinew n.腱;体力;力气 [OE sin(e)we

singe v.轻微烧焦;以烫发钳夹 [OE sencgan

singularity n.奇异;稀有;异常 [E

sinister a.邪恶的;不祥的 [E

sinuous a.蜿蜒的 [F sinueux or L sinuosus(SINUS窦;下凹的地方)]

sip n.(饮料的)一口;一啜 [ME: perh a modification of SUP一口;吸;进晚餐;体验]

siren n.气笛;警报器 [

skeptic n.怀疑者

skeptical a.怀疑性的;怀疑论的

sketchy a.粗略的;大概的 [sketch素描]

skewer n.串;烤肉叉子 [17th c, var of dial skiver 切割皮革之人;皮革刀]

skimp v.吝啬地给;缩支节用 [18th c: cf SCRIMP 节省,节约(on) skimpy吝啬的]

skirmish n.前哨战;小争斗 [ME

skittish a.快活的;爱蹦跳的;怕羞的 [ME, perh formed as SKIT(苏)疾行;跳跃]

skulk v.躲躲闪闪;潜行 [ME

slacken v.松弛;变缓慢;变迟钝

slake v.解;充;满足 [OE slacian

slander n.诽谤;造谣 [

slant v.倾斜 [aphetic form of ASLANT倾斜地:

slap n.掴 [LG slapp(imit)slaping 非常快的;非常大的]

slattern n.邋遢的女人;懒散的女人 [17th c: rel to slattering slovenly,

sleazy a.简陋的;低级的

sleek a.光滑的;井然有序的 [later var of SLICK 光滑的;口齿伶俐的]

sleight n.技巧;熟练 [ME sleghth

slimy a.泥泞的;粘糊糊的

sling n.投石器;吊腕带;果汁甜酒 [have one's arm in a ~ 吊挂手臂 ~ stones at a dog用石头打狗]

slither v.滑动 [

sloppy a.泥泞的;感情脆弱的 [Sloppy Joe 不整洁男子;宽大女用羊毛衫;一种牛肉三明治]

slopy a.倾斜的

sloth n.怠惰;树懒 [ME

slough v.蜕皮 [ME, perh rel to LG slu(we)husk]

slovenly a.不洁的;马虎的 [sloven懒散的人;散慢的人

slump n.猛然掉落;意气消沉;萧条 [orig 'sink in a bog': The ice cracked and he ~ed into the cleft]

slur v.随便加以处理;含糊发音

smattering n.一知半解;少量 [He has a ~ of knowledge about physics. smatter 一知半解地说]

smear v.涂;弄脏 [OE smierwan

smidgen n.少量;些微 [perh