mislaid
adjectiveUK /ˌmɪsˈleɪd/
US /ˌmɪsˈleɪd/
Lost because you forgot where you put it.
My keys are mislaid somewhere in the house.
OTHER MEANINGS
2. Put something down and forgot where it was.
She mislaid her glasses on the kitchen table.
3. Not able to be found for a short time.
The mislaid book turned up under the sofa.
4. Past tense of mislay, meaning to lose something by forgetting where you put it.
He mislaid his wallet yesterday.