How can an action be a lie? An unrighteous action is just that...An unrighteous action. Doesn't make it a lie...That doesn't even make sense.
If I go punch someone in the face, that's an action...What I did was straight-forward and there's no getting around it. I did what I did. My actions don't lie.
If someone then comes and asks me later, "hey, did you punch that guy" and I say "no"...That's deceit...That's a lie. I can be deceitful with my words. Just because I said I didn't, doesn't mean I didn't.
Bottom line...An action can't be a lie unless it's a made-up action. Made-up actions aren't real actions and can only come from words, since they never really happened and no one really experienced that action. Those words would therefore by lies.