biennial                once every two years.
biannual                twice a year.
prolepsis               an occurrence or assignment before the actual
                        or expected time; (rhet.) the anticipation of
                        possible objections.
apophasis               (rhet.) mentioning a subject while disavowing
                        any intention of doing so.
enantiosis              (rhet.) a figure of speech whose intent is at
                        odds with its appearance; irony.
tmesis                  the transposition of a word or words into the
                        middle of a compound word.
battology               excessive repetition of words.
enallage                (rhet.) a substitution of grammatical forms,
                        as plural for singular.
hypallage               (rhet.) the interchange of a syntactic relation.
dextrocardia            a condition in which the heart is on the right
                        side of the chest, possibly with reflection of
                        its chambers as well.
hyperbaton              (rhet.) unusual word ordering, often emphatic.