I think I’ll let Mark Twain tell us about it:
“…He uses “verbal,” for “oral”;
“precision,” for “facility”;
“phenomena,” for “marvels”;
“necessary,” for “predetermined”;
“unsophisticated,” for “primitive”;
“preparation,” for “expectancy”;
“rebuked,” for “subdued”;
“dependent on,” for “resulting from”;
“fact,” for “condition”; “fact,” for “conjecture”;
“precaution,” for “caution”;
“explain,” for “determine”;
“mortified,” for “disappointed”;
“meretricious,” for “factitious”;
“materially,” for “considerably”;
“decreasing,” for “deepening”;
“increasing,” for “disappearing”;
“embedded,” for “enclosed”;
“treacherous,” for “hostile”;
“stood,” for “stooped”;
“softened,” for “replaced”;
“rejoined,” for “remarked”;
“situation,” for “condition”;
“different,” for “differing”;
“insensible,” for “unsentient”;
“brevity,” for “celerity”;
“distrusted,” for “suspicious”;
“mental imbecility,” for “imbecility”;
“eyes,” for “sight”; “counteracting,” for “opposing”;
“funeral obsequies,” for “obsequies.”

Twain was, of course, discussing James Fenimoore Cooper.