I'dn't've 

Contraction of 'I would not have'.

Pete: "I kicked Paul in the butt."
Rachel: "I'dn't've done that if I were you!"

I'dn't've by Mr Catastrapostrophe July 29, 2006

I'dn't've 

Contraction of "I would not have".

I'dn't've coffee right now.

I'dn't've by ÞÆÖÐÞÆÖÐÞÆÖÐÞÆÖÐÞÆÖÐÞÆÖÐÞÆÖÐ January 10, 2024

who'd'ven't'f'i'dn't've'nt'f'i'd'ven't'f'ihavn'tn't'd'i've 

A lengthy contraction. Use it your own way, who knows what it actually means. It’s too rusty to translate. The word can be found on Reddit, Tumblr, and probably more, most likely originating on social media.

Mike: who'd'ven't'f'I'dn't've'nt'f'I'd'ven't'f'Ihavn'tn't'd'I've-
John: Mike, shut up, we’re in an interview

who'd'ven't'f'i'dn't've'nt'f'i'd'ven't'f'ihavn'tn't'd'i've by SomebodyNamedFjord April 3, 2020

Y'all'd've'd'i'dn't 

A contraction for the phrase "You all would have, had I had not."

Did you all drink my Mountain Dew? Because I'm sure y'all'd've'd'i'dn't.

Y'all'd've'd'i'dn't by The Dew Dude August 26, 2021