كليا

In a sentence

• تغيرت حياتي كلياً بعد اتخاذ هذا القرار.

  My life changed completely after making this decision.

  In this sentence, "كلياً" is used as an adverb to emphasize the total extent of the change in the person's life.

• لم أستطع فهم الموضوع كلياً بسبب صعوبة التفسير.

  I couldn't fully understand the topic due to the difficulty of the explanation.

  Here, "كلياً" acts as an adverb to indicate the incomplete understanding of the subject.

• يجب أن تؤمن كلياً بقدراتك لتحقيق النجاح.

  You must completely believe in your capabilities to achieve success.

  In this phrase, "كلياً" is used to stress absolute belief or confidence in one's abilities.