Sedulously

Sedulously avoid all polysyllabic profundity, pompous prolixity, psittaceous vacuity, ventriloquial verbosity, and vaniloquent vapidity.

Source: tatoeba (11822378)

When the neighbours saw Mirbel thus sedulously adorning herself, they quickly discovered that she had ceased to think of her father—that she had ceased to mourn for him.

Source: wiktionary

We bought some biscuits and chocolate which we ate sedulously as we wandered through the squalid streets where the families of the fishermen live.

Source: wiktionary

That court would sedulously avoid meeting contentious issues and would sit in resplendent dignity aloof from the issues of the day.

Source: wiktionary