Meaning of the word hadn't in English

What does hadn't mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

hadn't

US /ˈhædnt/
UK /ˈhæd.ənt/
"hadn't" picture

Contraction

contraction of 'had not'

Example:
I hadn't seen him in years.
They hadn't finished their work by the deadline.