sly
/slaɪ/adjective
1slyer, slyest
- having or showing a cunning and deceitful nature狡猾的：
she had a sly personality.
她个性狡诈。
1.1
- (of a remark, glance, or facial expression) showing in an insinuating way that one has some secret knowledge that may be harmful or embarrassing（言语, 眼光, 面部表情）诡异的, 狡黠的：
he gave a sly grin.
他狡黠地咧嘴一笑。
1.2
- (of an action) surreptitious（动作）躲躲闪闪的, 偷偷摸摸的：
a sly sip of water.
偷偷喝了一小口水。
短语
on the sly
- in a secretive fashion偷偷地：
she was drinking on the sly.
她偷偷地喝酒。
派生词
slyly
（亦作slily）adverbslyness
noun词源
Middle English （also in the sense 'dexterous'）： from Old Norse slægr 'cunning', originally 'able to strike' from the verb slá; compare with SLEIGHT.