Got you
Gotcha
/ˈɡɑtʃə/AssimilationReduction
In real speech
What happens to the sounds
t + y blend into /tʃ/ (“ch”), and you weakens to /ə/: got you → “GOT-cha”.
When to use it
Means “understood” or “caught you!”. Fine with colleagues; with clients say Understood.
Casual → formal
Slang
gotcha
Neutral
got it
Formal
I understand
Sound notes
Assimilation: neighbouring sounds change each other, e.g. t + y → “ch”, d + y → “j”.