چندان

In a sentence

• من چندان علاقه‌ای به این موضوع ندارم.

  I do not have much interest in this subject.

  Here, 'چندان' conveys a sense of relative scarcity or small amount indicating 'not much' interest.

• بعضی از دوستانم چندان مایل به همکاری نبودند.

  Some of my friends were not very willing to cooperate.

  In this sentence, 'چندان' emphasizes that the willingness was minimal or insufficient.

• او چندان که من تعریف کردم، سخت‌کوش نیست.

  He is not as hardworking as I described.

  Here, 'چندان' is used for making a comparison, implying the level of hard work doesn't meet the described amount.