外博词典，懂英语单词快速记忆法的在线英语词典
sluttish (adj.)
late 14c., from slut + -ish. Related: Sluttishly; sluttishness.
slutty (adj.)
c. 1400, "dirty, slovenly," from slut + -ish.
sly (adj.)
c. 1200, "skillful, clever, dexterous," from Old Norse sloegr "cunning, crafty, sly," from Proto-Germanic *slogis (source also of Low German slu "cunning, sly," German schlau), probably from base *slak- "to strike, hit" (see slay (v.)), with an original notion of "able to hit." Compare German verschlagen "cunning, crafty, sly," schlagfertig "quick-witted," literally "strike-ready," from schlagen "to strike." A non-pejorative use of the word lingered in northern English dialect until 20c. On the sly "in secret" is recorded from 1812. Sly-boots "a seeming Silly, but subtil Fellow" is in the 1700 "Dictionary of the Canting Crew."
slyly (adv.)
c. 1200, from sly (adj.) + -ly (2).
slyness (n.)
increment 增加，加薪
in-，进入，使，-cre，增加，创造，词源同create，crescent.引申词义加薪。
increment 增加；盈余
词根词缀：in-入，向内 + -cre-生长 + -ment名词后缀
incremental 增加值的，逐渐增长的，递增的
词根词缀：in-入，向内 + -cre-生长 + -ment名词后缀 + -al形容词后缀
increscent 增加的，成长的；(尤指月亮)渐渐变大的，渐盈的
词根词缀：in-入，向内 + -cre-生长(e略) + -escent形容词后缀，某种状态
incriminate 使负罪，连累
in-，进入，使，crime，犯罪。引申词义使负罪，连累。
