Invalid and Sincere

Opposite meaning words

Invalid adjective - Chronically or repeatedly suffering from poor health.

Show all Definitions

Sincere is an antonym for invalid.

Sincere adjective - Genuine in feeling.

Show all Definitions

Invalid is an antonym for sincere in straightforward topic.

Nearby Words: sincerely, sincerity

Cite this Source

Sincere and Invalid. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/invalid/sincere

Invalid & Sincere. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/invalid/sincere>.

Sincere or Invalid. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/invalid/sincere.

Google Ngram Viewer shows how "invalid" and "sincere" have occurred on timeline