“Rosie slapped Herbert in the face, unimpressed by his indecent proposal.”

“I am seated with almost indecent haste and handed a menu.”

“She shocks the town with her indecent dress and shameless flirtations.”

“The British press has been atypically lenient in its review of his atrociously indecorous behaviour.”

“First, an indecorous alphabet, which I have no idea about, other than it features descriptions of words that don't normally get written about.”

“There are exceptions, which it would be indecorous, perhaps even counter-productive, to name.”