- ex|pert|ise
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–n.1. expert opinion or knowledge, often expressed on some matter submitted to consideration by experts: »
connoisseurs full of mumbo-jumbo and expertise.
2. the quality or state of being an expert; skill or expertness in a particular study or sport: »His expertise was not equal to the task.
–v.i., v.t.= expertize. (Cf. ↑expertize)
Useful english dictionary. 2012.