expression
for some time now; for quite a while; already
Indicates that a state or action has been ongoing since some time ago, often with a nuance of 'already' or 'for a while now'. Used adverbially.
かねてから計画していた旅行にやっと行ける。
I can finally go on the trip I've been planning for quite a while.
彼のことはかねてから知っていた。
I've known about him for some time now.