i Register
In some senses, finder is marked as UK, historical. Watch for register when choosing this word.
ADJ.
electrical, online, professional
My brother used an online finder to locate his lost phone in the parking lot.
VERB + FINDER
need
We need a finder to locate the lost car keys before we leave for the airport.
FINDER + NOUN
people, treasure, trove
The treasure finder discovered ancient coins buried beneath the old oak tree.
PREP.
through
I found the lost keys through a finder app on my phone.
ADV.
perhaps
Perhaps the finder of the lost wallet decided to return it to the police station.