History
History
History
UK
US
Meaning:

(of a person, action) deceptive; (of work etc) having hidden or unexpected difficulties

complicated, difficult

complex critical delicate intricate knotty precarious problematic risky rocky sensitive sticky thorny ticklish touchy unstable catchy involved perplexing quirky touch-and-go undependable
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TRICKY as in Wiktionary
TRICKY as in Wikipedia