任す

1. Origins, structure, and basic meaning

• Structure: The written form is 任す, read まかす. This transitive verb means entrusting work or a decision to another person.
• Basic usage: 人に任す describes leaving preparations to an experienced person, while 責任者に任す describes a policy of leaving detailed decisions to the on-site manager.

2. Common pitfalls and similar expressions

• Preparations entrusted to an experienced person
  • Responsibility for venue preparations is given to someone experienced. Example: 会場の準備は経験のある人に任した。 — We left the venue preparations to someone experienced.
• Decisions left to the on-site manager
  • The policy entrusts detailed decisions to the person responsible on site. Example: 細かな判断は現場の責任者に任す方針だ。 — Our policy is to entrust detailed decisions to the on-site manager.