يكفي

In a sentence

• يكفي أن نعمل بجد لتحقيق النجاح.

  It suffices that we work hard to achieve success.

  Here, "يكفي" is used to express sufficiency or adequacy of an action or condition.

• هل يكفي الطعام لجميع الضيوف؟

  Is the food enough for all the guests?

  In this sentence, "يكفي" is used to question adequacy or sufficiency of an item.

• لا يكفي مجرد التحدث دون فعل شيء.

  Merely talking without doing anything is not sufficient.

  "يكفي" is utilized here to describe insufficiency or inadequacy in explaining a condition.