This is the 17402nd most frequent Turkish word.
üzereydim
"I was about to."
Here 'üzereydim' indicates an action that was about to happen but got interrupted.
Üzereydim düşerken birine tutundum.
I was about to fall when I held onto someone.
In this sentence, 'üzereydim' demonstrates intention of performing an action that was close to being started before an event occurred.
Evden çıkmak üzereydim, telefon çaldı.
I was about to leave the house when the phone rang.
This usage shows a mental state near to occurring, highlighting a change in focus or resolution.