mumpishness

Example:Her talkativeness contrasted sharply with his mumpishness and gave her a commanding presence in meetings.

Definition:A disposition to talk or state one’s opinions freely and at length.

Example:As an outspoken woman, she exhibited a complete antithesis to mumpishness in all her interactions.

Definition:A tendency to communicate openly and willingly, in direct opposition to being reserved or silent.

Example:His brightness and friendliness shone through, making him the opposite of mumpishness in all gatherings.

Definition:A quality of being lively and cheerful, often in conversation or speech, directly countering a tendency to remain silent or reserve one’s opinions.