- 1(also hah) the sound that people make when they are surprised or pleased or when they have discovered something Ha! It serves you right! Ha! I knew he was hiding something.
- 2(also ha! ha!) the word for the sound that people make when they laugh
- 3(also ha! ha!) (informal) (ironic) used to show that you do not think that something is funny Ha! Ha! Very funny! Now give me back my shoes.