triple contraction
a contraction that consists of three different words. Contractions are a combination of multiple words that are put together with apostrophes. But there is a difference between contractions and triple contractions.
regular contraction: don't (do not)
triple contraction: couldn't've (could not have)
(ex for reg.) : Don't do that (do not do that)
(ex for triple) : You couldn't've done that (you could not have done that)
triple contraction: couldn't've (could not have)
(ex for reg.) : Don't do that (do not do that)
(ex for triple) : You couldn't've done that (you could not have done that)