Common words that rhyme with irrelevant include relevant, servant, instant, significant, brilliant, indignant, insignificant, extant, distant, unpleasant, valiant, radiant, fulgurant, vibrant and buoyant.
The information is highly relevant today.
The smell triggered instant disgust.
A significant difference is evident.
The court issued a warrant for his absconding.
Everyone praised her brilliant performance.
His comment seemed insignificant in the grand scheme.