knifflig
Translation
tricky, difficult, delicate
Examples
Das ist ein kniffliges Problem.
This is a tricky problem.
Er hat ein kniffliges Puzzle gelöst.
He solved a tricky puzzle.
Grammar Patterns
knifflig + Noun a tricky ... Das ist ein kniffliges Problem.
sth. is knifflig sth. is tricky Das Rätsel ist wirklich knifflig.
Similar Words
Synonyms: schwierig (difficult), kompliziert (complicated); Antonyms: einfach (easy), leicht (easy)
Etymology
Derived from the noun 'der Kniff' (a trick, a knack). So, something requiring a knack.
Memory Tips
It sounds a bit like 'knife-lich'. Imagine a situation that is sharp and requires careful handling, like a knife.