The least just word is...

"Just"... It's most common usage, something close to "merely," often has a mean, reductive, and patently dismissive intent that some people bandy about in conversation just for kicks and control.

In other words, I seldom hear people going on about doing the just thing or whether we're fighting a just war. More likely, they're saying "Oh, he's just a blank" or "She's just a so and so" or my least favorite, "You just need to gross oversimplification..." It's one of those words that glibly collapses entire lives into little shit balls so that they might be flicked out of someone's golden way. And that kind of power play is just not nice. Or just. For those seeking justice, just sit still, it's just a matter of time before the unjust get their just deserts.