The unexpectedness and irrelevancy of this for a moment startled Seth.
At this point McGeorge was lost in the irrelevancy of Lizzie's mind.
"Yes," she answered, surprised at the irrelevancy of the question.
The temptation to diffuseness and irrelevancy is as embarrassing and dangerous.
Pardon my irrelevancy, but the remembrance of a recent adventure of mine was too strong.