n.skill acquired through experience in a trade; often used to discuss skill in espionage

"instructional designers are trained in something that might be called tradecraft"; "the CIA chief of station accepted responsibility for his agents' failures of tradecraft"

Tradecraft
TRADE CRAFT
Tradecraft
Assessing the Tradecraft of Intelligence Analysis:
A tradecraft primer: Structured analytic techniques for improving intelligence analysis
“Dumb” Yet Deadly: Local Knowledge and Poor Tradecraft Among Islamist Militants in Britain and Spain
Optimization Tradecraft: Hard-Won Insights from Real-World Decision Support
Optimization Tradecraft: Hard-Won Insights from Real-World Decision Support
Twenty Years of Canadian Tradecraft: Canada at GATT, 1947-1967
Cyber Intelligence Tradecraft Project: Summary of Key Findings
Bridging Public Health and Foreign Affairs: The Tradecraft of Global Health Diplomacy and the Role of Health Attachés
Antifungal tradecraft by cholesterol oxidase.
Tradecraft: Professional writing as problem solving