Showing a lack of respect for people or things that are generally taken seriously; disrespectful in a playful or humorous way. Not showing proper reverence or seriousness.
From Latin 'irreverent-,' from 'in-' (not) + 'reverent-' (showing respect), from 'revereri' (to respect, fear). The root 'rever' relates to respect and awe, so irreverent means lacking in proper respect or awe.
Break it down: 'ir-REVERENT'—not showing 'reverence' (deep respect). Think of a class clown making jokes during a serious ceremony. Irreverent people don't treat sacred or serious things with the solemnity others expect—they're cheeky and disrespectful, often in a humorous way.
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