Question

what is opposite of serious
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Answer 1

$\fbox \pink {A} \fbox \blue {N} \fbox \purple {S} \fbox \green {W} \fbox \red {E} \fbox \orange {R}$

Opposite of serious is unimportant, trivial etc.

${\mathfrak{\red{I\:hope\: </p><p>it\:helps}}}$