keep one’s nose clean

In addition to the idioms beginning with nose

• nose about
• nose in
• nose in a book, have one’s
• nose in the air, have one’s
• nose into
• nose out
• nose out of joint, have one’s
• nose to the grindstone, keep one’s

also see:

• brown nose
• can’t see beyond the end of one’s nose
• count noses
• cut off one’s nose
• follow one’s nose
• keep one’s nose clean
• lead by the nose
• look down on (one’s nose)
• no skin off my nose
• on the nose
• pay through the nose
• plain as day (the nose on your face)
• poke one’s nose into
• rub someone’s nose in it
• thumb one’s nose
• turn up one’s nose
• under one’s nose
• win by a nose