Pronunciation: /æk/
noun a sudden sharp noise
A1 I heard an 'ack' from the back of the room.
A2 The 'ack' of the dog alerted us to someone's presence.
B1 The sudden 'ack' in the engine made us pull over to check.
B2 The 'ack' of disappointment was evident in her voice.
C1 The 'ack' of approval from the board members signaled our success.
C2 Her 'ack' of resignation was met with understanding from her colleagues.
interjection used to express disgust, pain, or surprise
A1 Ack! I dropped my pencil.
A2 Ack! I forgot to bring my homework.
B1 Ack! I can't believe I missed the bus.
B2 Ack! I made a mistake on my test.
C1 Ack! I need to reschedule my meeting.
C2 Ack! I accidentally deleted an important file.
formal The recipient must acknowledge receipt of the package.
informal Hey, did you ack that email I sent you?
slang I acked that message as soon as I saw it.
figurative Sometimes it's important to ack your own feelings before addressing others.
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