Definition & Meaning of "banal"

Despite the extravagant decorations, the party turned out to be banal and uneventful, with the same mundane conversations and activities.

Through a series of banal observations and superficial descriptions, the author's writing style lacked the depth and nuance needed to engage readers.

With its repetitive and banal lyrics, the song failed to resonate with the listeners, lacking the depth and originality they craved.