meaningless

Lacking meaning.

The word "gugugu" is meaningless in English.

As the years go by, speech reverts to childhood levels of disfluency, with more pauses, more errors, more repeated words, but even the peak years are not great: up to 8 percent of the average person’s word output consists of meaningless fillers and placeholders like um, uh and er.

Insignificant; not worthy of importance.

All our efforts were ultimately meaningless.

Whether modern, industrial man is less or more warlike than his hunter-gatherer ancestors is impossible to determine. The machine gun is so much more lethal than the bow and arrow that comparisons are meaningless.