Skill in handiwork The derivation of this word is a great puzzle Minshew suggests that it is a mere variant of knock Cotgrave thinks it a variant of snap Others give the German knacken (to sound)
a special way of doing something; "he had a bent for it"; "he had a special knack for getting into trouble"; "he couldn't get the hang of it"
A knack is a particularly clever or skilful way of doing something successfully, especially something which most people find difficult. He's got the knack of getting people to listen