This is the 3753rd most frequent Japanese word.
たしかめ
"たしかめ" means "confirmation" or "verification."
Here, 'たしかめる' is used to mean 'to confirm or verify'. The speaker ensured the door's lock status.
ドアがロックされているかどうかをたしかめました。
I checked if the door was locked.
The word 'たしかめる' here implies the action of verifying the accuracy of given information.
その情報が正しいかたしかめたいです。
I want to confirm if that information is correct.
In this sentence, 'たしかめる' refers to the action of checking or reviewing something to ensure correctness.