“duty / entrust” in Japanese is 任, read nin, maka (にん, まか). It is a Grade 5 Kyōiku kanji, taught in year 5 of Japanese elementary school, and appears in words such as 責任 (responsibility).
What does 任 mean?
大事な仕事を任せる。
Same sound, different character — the classic trap. Compare them side by side: