Ah (interjection)

  1. Used to express pleasure, realization, or agreement.
  2. Used to express hesitation or uncertainty.

Origin:

Late 16th century: representing a natural vocalization.

Examples:

  1. Ah, that feels so good.
  2. Ah, I see what you mean now.
  3. Ah, I've been waiting for this moment.
  4. Ah, I'm not sure what to say.
  5. Ah, I'm not sure if I can make it to the meeting.
Some random words: timber, coincidental, brainpower