This is the 17371st most frequent Polish word.
zapomniała
"Zapomniała" means "she forgot" in English.
The verb 'zapomniała' is used to indicate that 'she' (a female subject) forgot something (the keys), employing the past tense.
Ona zapomniała kluczy w domu.
She forgot the keys at home.
In this case, 'zapomniała' denotes forgetting about an event or occasion, demonstrating its use with a prepositional phrase.
Maria zapomniała o spotkaniu z przyjaciółmi.
Maria forgot about the meeting with friends.
Here, 'zapomniała' implies forgetting to perform an intended action, which is expressed using an infinitive verb to convey the idea of neglecting to do something.