()くす

なくす
verb (godan)
to lose
1. to lose (something)
To misplace or no longer have something that you once possessed. This is transitive - you lose something.
(ほん)()くした。
I lost my book.
I lost my wallet.
Common usage
(かぎ)()くさないでください
Please don't lose the key.
When I lost my ticket, I consulted the station attendant, but I had to buy a new one.
I lost my cell phone, so I bought a new one.
2. to get rid of, to eliminate
To remove or eliminate something undesirable.
この問題(もんだい)()くしたい。
I want to eliminate this problem.
Meaning to get rid of
We are working to eliminate discrimination.
Eliminate waste and improve efficiency.
Practice is needed to eliminate anxiety.
We can't eliminate accidents, but we can reduce them.

TRANSITIVITY: 他動詞(たどうし) (transitive). Pair: ()くなる (intransitive). Pattern: Xを()くす (lose X).

ASPECT: ている indicates resulting state. ()くしている = 'have lost.'

COMMON PATTERNS:

  • 財布(さいふ)()くす (lose wallet)
  • (かぎ)()くす (lose keys)
  • ()くさないで (don't lose it)
  • 問題(もんだい)()くす (eliminate a problem)

PAIR: ()くなる (intransitive) - お(かね)()くなった (money ran out).

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