bathos

Rather like the way of life it celebrates, The Radetzky March hinges on trivia and bathos more than any real grand gesture.

Bathos, a Greek word meaning depth, now used to signify a ludicrous sinking from the elevated to the mean in writing or speech.

"Oh, bathos," laughed Philip, but offered no opposition to so sensible a suggestion.

Bathos, an anti-climax, being a sudden descent from the sublime to the commonplace.