Verbs are words used to express actions, occurrences, and states of being.
Affixes are morphemes we add to the roots of words to change their meaning. A suffix is an affix we add after the root.
The root we have here is <em>just</em>, the meaning of which can be defined as<em> moral, right </em>or <em>fair. </em>Suffixes added to it here are <em>-ice, -ify, </em>and <em>-ly</em>. Out of them, the only one used to form verbs is<em> -ify</em>. Its meaning is<em> to become</em> or <em>make (someone or something) become (something). </em>This is why the verb<em> to justify </em>means <em>to show or prove to be just or right.</em>