Impromptu and Mock

Impromptu

Impromptu adjective - Made or done without previous thought or preparation.

Mock is an antonym for impromptu.

Mock

Mock adjective - Lacking in natural or spontaneous quality.
Usage example: since I had inadvertently learned what I was getting, I opened the present with mock surprise

Impromptu is an antonym for mock.

Nearby Words: mockery, mocking, mocked, mocker, mockingly
Cite this Source
Mock and Impromptu. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impromptu/mock
Impromptu & Mock. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impromptu/mock>.
Mock or Impromptu. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impromptu/mock.
Google Ngram Viewer shows how "impromptu" and "mock" have occurred on timeline