In some cases, we are wise to likewise be flexible; in others, we relax our vocabulary at the expense of useful distinctions:
The literal meaning of this word, as all you lovers of Latin (not to be confused with Latin lovers) know all too well, is “to reduce by one-tenth,” supposedly from the punitive custom of selecting one out of 10 captives by lot and killing those so selected. But the senses for this rhadamanthine Roman policy have proliferated, so that now it means “tithed,” “drastically reduced,” or “destroyed” as well.
Commonly employed to mean “not interested,” disinterested has a precise, useful meaning of “neutral, unbiased.”
Some people would reserve this word to mean “monstrously wicked,” but it is properly invoked to refer to anything overwhelming or an unexpected event of great magnitude, and thus it need not be invariably corrected to enormousness.
Refrain, however, from diluting the word’s impact in such usage as, “The enormity of the new stadium struck them as they approached the towering entrance.”