expertise
B2UK /ˌekspɜːˈtiːz/US /ˌekspɜːrˈtiːz/
Meaning
noun
expert knowledge or skill in a particular subject, activity or job
“professional/scientific/technical, etc. expertise”
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“Nobody has a clue, despite all the expertise that's been on parade for the past four days, what the world will look like in five years' time.”
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