decathlete/diʹkathleet/ noun

• nothing to
• nothing to do with
• nothing to write home about
• not hold a candle to
• no through road
• notice
• noticeable
• notice board
• notifiable
• notification
• notify
• not in the least
• notion
• notional
• not know one's arse from one's elbow
• not know somebody from Adam
• not know the half of it
• not know whether one is coming or going
• not lay a finger on
• not least
• not lift a finger
• not look back
• not make head or tail of something
• not mince matters/one's words
• not much chop