Как по Английски будет desinteressiert

adjective

Lacking enthusiasm and determination; carelessly lazy.

Примеры использования:

A lackadaisical defence left spurs adrift in the second half

adjective

Not interested in or concerned about something or someone.

Примеры использования:

I was totally uninterested in boys

adjective

Not influenced by considerations of personal advantage.

Примеры использования:

A banker is under an obligation to give disinterested advice

adverb

In a way that has no personal involvement or gives someone no personal advantage, and therefore makes them free to act fairly

Примеры использования:

The prosecutor argues to the jury that the witness is testifying disinterestedly., public officials…