"Do you want it?" becoming "D'you wannit?", fits this pattern perfectly.
Dropping the final 't' in "want" before "it" to make it sound like "wannit" is extremely common in many English accents, especially in American English.
Why It Happens: T-Elision
This phenomenon is called t-elision, which just means the 't' sound is omitted or deleted. This very frequently happens to the /t/ sound when it comes right after an /n/ sound in casual, fast speech. You're not mishearing it; native speakers do this all the time without thinking.
Think about other common examples:
Internet often becomes "innernet"
Twenty often becomes "twenny"
Center often becomes "cenner"
Wanted often becomes "wanned"
A Similar Sound: The 'Flap T'
In American English, there's another thing that can happen to that 't'. It can turn into a flap T, which sounds like a quick 'd' sound.
So, you will very often hear "want it" pronounced in two ways in the US:
With T-Elision: "wannit" (the 't' disappears)
With a Flap T: "wandit" (the 't' sounds like a 'd')
Both are completely normal and widespread in informal North American speech. So, whether you hear "wannit" or "wandit," you're hearing a natural feature of the accent. 👍
