professional：职业的，专业的

来自profession,职业，专业。

professional：职业的，专业的，专门的

-fe-说→ -fess-表白词根词缀：pro-前,公开 + -fess-表白 + -ion名词词尾 + -al

• non-controversial
• non-custodial
• nondescript
• none
• nonentity
• nonessential
• nonet
• nonetheless
• non-event
• nonfiction
• non-fiction
• nong
• non-intervention
• non-invasive
• non-malignant
• no-no
• nonpareil
• nonplussed
• non-prescription
• nonprofit
• non-proliferation
• non-proprietary
• non-refundable
• nonsense
• non sequitur