あてにする

expression, suru verb (irregular)

count on; rely on; expect

Used when someone depends on a person, thing, or event happening, often with a sense of anticipation or trust. Common in negative or cautionary contexts.

• 彼かれの助たすけを当あてにしないほうがいい。

  You shouldn't count on his help.

• ボーナスを当あてにして新あたらしい車くるまを買かった。

  I bought a new car counting on the bonus.