The word "unimportance" is a Noun that means The lack of importance; insignificance.. In Bengali, it is expressed as "অগুরুত্ব, গুরুত্বহীনতা, তাৎপর্যহীনতা", which carries the same essential meaning. For example: "He dismissed the issue with a shrug, emphasizing its 'unimportance'.". Understanding "unimportance" enhances vocabulary and improves language comprehension for both English and Bengali speakers.