Shrewd
Shrewd , adjective
[Originally the past participle of shrew, transitive verb]
1.
Inclining to shrew; disposing to curse or scold; hence, vicious; malicious; evil; wicked; mischievous; vexatious; rough; unfair; shrewish. [Obsolete] — Chaucer
[Egypt] hath many shrewd havens, because of the great rocks that ben strong and dangerous to pass by.
Every of this happy number
That have endured shrewd days and nights with us.
2.
Artful; wily; cunning; arch.
These women are shrewd tempters with their tongues.
3.
Able or clever in practical affairs; sharp in business; astute; sharp-witted; sagacious; keen; as, a shrewd observer; a shrewd design; a shrewd reply.
Professing to despise the ill opinion of mankind creates a shrewd suspicion that we have deserved it.