New words: crafty, cunning, sly

crafty, adjective, /'kræfti/

good at getting what you want by clever planning and by secretly deceiving people.
clever in usually a deceptive or dishonest way.

He’s a crafty old devil. a crafty schemer/plotter. a crafty scheme.

cunning, adjective, /'kʌnɪŋ/

1

someone who is cunning is clever and good at deceiving people in order to get what they want.
getting what is wanted in a clever and often deceptive way.

a cunning opponent.
a cunning criminal.
She was cunning enough to fool me. a cunning plan.

2 

behaviour or actions that are cunning are clever but dishonest and unfair, and are used to get what you want.

a cunning plan.

3 

a cunning object or piece of equipment is clever and unusual.

a cunning little device for keeping out draughts.

4 

(American English) old-fashioned attractive.

a cunning little dress.

cunningly, adverb, /'kʌnɪŋli/
They cunningly dodged our questions.

cunning, noun, /'kʌnɪŋ/

the ability to achieve what you want by deceiving people in a clever way.
cleverness or skill especially at tricking people in order to get something.

the tiger’s ferocity and cunning.
She would use low cunning (=unpleasant dishonest methods) to win people’s sympathy.
He may be a fraud, but you have to admire his cunning.
(chiefly Brit) He succeeded through a combination of charm and low cunning. [=clever but morally bad and dishonest methods]

sly, adjective, /slaɪ/

1 

someone who is sly cleverly deceives people in order to get what they want. clever in a dishonest way.
showing that you know a secret.

a sly con man.
a sly scheme.
a sly wink/glance/smile.

2 sly smile/glance/wink etc

a smile, look etc that shows you know something secret.

He leaned forward with a sly smile.

3 on the sly

secretly, especially when you are doing something that you should not do.
in a secret way.

They’d been seeing each other on the sly for months.
They've been meeting each other on the sly. [=secretly]