Unavailing in a sentence and paraphrased in a sentence.

Here are examples of the word/phrase "unavailing" used in a sentence and paraphrased in a sentence...

There were several unavailing attempts towards bypassing the security.

There were several futile attempts towards bypassing the security.

After initiating a plethora of unavailing endeavors, he still didn't lose hope.

After initiating a plethora of pointless endeavors, he still didn't lose hope.

Just because you failed doesn't mean your effort was unavailing.

Just because you failed doesn't mean your effort was fruitless.

Other Examples...