keep (your) nose clean

to avoid getting into trouble or doing anything illegal.

I'd only been out of prison three months so I was trying to keep my nose clean.

• go against the flow
• go against the grain
• go against the tide
• go ahead
• go ahead with
• go ahead with something
• go all out
• go all round the houses
• go all the way
• go along
• go along for the ride
• go a long way
• go a long way toward
• go a long way toward something
• go along with
• go along with someone
• go along with something
• go amiss
• go ape
• go around
• go around and around
• go around in circles
• go astray
• go at it hammer and tongs
• go back a long way