1. the quality or state of being done routinely and with little care or interest; lack of genuine effort or attention
Usage: uncountable noun; formal

Examples

• The perfunctoriness of his apology made it clear he didn't truly regret his actions.
• She criticized the perfunctoriness of the inspection, which had lasted only five minutes.
• The perfunctoriness with which he completed the assignment disappointed his teacher.
• His perfunctoriness in greeting guests suggested he would rather be elsewhere.
• The report was marked by a perfunctoriness that overlooked important details.
• We could sense the perfunctoriness in her tone as she recited the safety instructions for the hundredth time.