both eloquent and skilled; smooth-talking and dexterous
Describes a person who is both verbally fluent and manually capable, often with a nuance of being glib or slick. Can be used positively or critically depending on context.
He is both eloquent and skilled, handling any job without a hitch.
口八丁手八丁の営業マンに説得されて、つい契約してしまった。
I was persuaded by the smooth-talking salesman and ended up signing the contract.
Focuses only on being verbally smooth or flattering, without the manual skill component of 口八丁手八丁.
Means dexterous or handy, but lacks the verbal eloquence aspect and the idiomatic, sometimes slick nuance of 口八丁手八丁.
An idiomatic compound of 口 (mouth) + 八丁 (eight tools, implying skill) and 手 (hand) + 八丁, suggesting proficiency in both speech and manual tasks. The exact historical origin is uncertain, but it is a set phrase in modern Japanese.