Excess frivolity, and an inability to be serious(noun)
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Use "moria" in a sentence
"Also, in parallel, there were the first onlne games like moria/nethack/angband (even a multiplayer version) and I also spent lots of times in several MUDs."
"Updated my five moria rogers – sanctuary shiloh walker – hunters need jess granger – beyond the shadows"
"The ancient Greeks attributed any surprising or abnormal behaviors to the moria, or ate, which had been put into the person by a god to suddenly fill them with the courage, confusion, or passion to perform particular acts."