Don't you know the meaning of propriety?

adjective excessively sweet or sentimental.

noun 1. any fine layer on a surface; a surface appearance of something grown beautiful especially with age or use. "the toast was spread with a patina of butter" "the beautiful patina of this antique table" 2. an appearance or aura that is derived from association, habit, or established character. "he carries the patina of old money and good breeding"

noun waste or debris of any kind. "streets filled with rubble and detritus"

adjective 1. using, containing, or denoting expressions that are natural to a native speaker. "distinctive idiomatic dialogue" 2. appropriate to the style of art or music associated with a particular period, individual, or group. "a short Bach piece containing lots of idiomatic motifs"

adjective In econometrics and signal processing, a stochastic process is said to be ergodic if its statistical properties can be deduced from a single, sufficiently long, random sample of the process.

adjective being at once relevant and appropriate; fitting. "omit details that are not germane to the discussion." 

verb reduce the force, effect, or value of. "...shows great skill in the use of language to moderate or attenuate the impact of awkward facts."

noun a trial-and-error method of problem solving used when an algorithmic approach is impractical. Similar to “rule of thumb”. 

adjective deriving ideas, style, or taste from a broad and diverse range of sources. "her musical tastes are eclectic."

noun the measurement of height or altitude. "The LSA specializes in the application of satellite altimetry to a broad array of climate and weather related issues."

noun extreme unwillingness to spend money or use resources. "a great tradition of public design has been shattered by government parsimony"

noun liability to change rapidly and unpredictably, especially for the worse. "the succession of new rulers contributed to the volatility of the situation"

adjective (of an object or substance) having a physical property that has the same value when measured in different directions.

noun a level or rank in an organization, a profession, or society. "the upper echelons of the business world"

adjective not in harmony or keeping with the surroundings or other aspects of something. "the duffel coat looked incongruous with the black dress she wore underneath"

verb encourage or assist (someone) to do something wrong, in particular, to commit a crime or other offense. “he was not guilty of murder but was guilty of aiding and abetting others”

noun a state of limited competition, in which a market is shared by a small number of producers or sellers.