Definitions

1. noun

a heavy, dull, or unenthusiastic sound, especially of coughing or sneezing, often in a loud and repetitive manner.

“The child’s mump filled the entire room with its loud, persistent sound.”

2. verb

to make a dull, heavy, or unenthusiastic sound, especially of coughing or sneezing.

“He began to mump loudly, trying to get attention from his family.”