This word is one of my pet peeves as well.  &quot;Performant&quot; is an ignorant and foolish way to say &quot;high performance&quot;.  It&#x27;s like saying &quot;voltant&quot; instead of &quot;high voltage&quot;.  I&#x27;m all for coining new words that mean new things, but when someone says &quot;performant&quot; I treat it as a clue that they might be a sloppy thinker.