потерянным

lost

→ потерять
по limited or one-time action + теря lose + нн forms adjectives and past passive participles, often meaning “having been X” + ым Dative plural / masculine-neuter instrumental singular
adjective · singular, instrumental Rare #37,461
lost Often used with себя to describe feeling confused, unsure, or without direction.
RU: Я чувствую себя потерянным.
EN: I feel lost.
Forms of потерять
MasculineFeminine
Singular потерян потерянной