acumen
UK: ˈækjʊmən | US: əˈkjuːmən
n. the ability to make good judgments and quick decisions, typically in a particular domain
Derived from Latin acūmen (sharpness, point), from acuere (to sharpen), related to acus (needle). The morpheme acu- retains its core meaning of "sharpness," metaphorically extending to mental sharpness or keen insight. The suffix -men (Latin -men) forms nouns indicating a state or result. Over time, acumen evolved from literal sharpness to figurative intelligence in English (16th century).
Her business acumen helped the company thrive during the recession.
The detective’s acumen solved the case in record time.
Scientific acumen is essential for groundbreaking research.
His political acumen made him a formidable strategist.
The professor’s acumen in linguistics earned her international acclaim.