In Québec, d gets pronounced dz before the French vowel sounds i and u. (dzidzu)
And t gets pronounced ts before the French vowel sounds i and u. (tsitsu)
Here are some dzidzu words:
dîner (dzîner), mardi (mardzi), duc (dzuc), perdu (perdzu)
And here are some tsitsu words:
tirer (tsirer), type (tsipe), tube (tsube), battu (battsu)
Here are some words containing d or t that are not dzidzu or tsitsu words (can you explain to yourself why?):
matin, douleur, information, Canada, côte, tour, donner
Now for some trickier stuff.
Words can never be dzidzu or tsitsu before the nasal vowels un, on, in, an:
patin, dingue, don, ton, tant, dans, inopportun
But they are indeed dzidzu and tsitsu if the nasal vowel sound is preceeded by a y sound:
canadien (canadzien), tiens (tsiens), Dion (Dzion)
And they are also dzidzu and tsitsu before the ui vowel sound:
tuile (tsuile), conduire (condzuire)
Remember, no need to stress over all of this because it’s never necessary to dzidzuate and tsitsuate to make yourself understood by the Québécois!
