Reliable
Reliable adjective - Worthy of one's trust.
Usage example: I need a reliable car that's not going to break down constantly
Sincere and reliable are semantically related in honest topic. In some cases you can use "Sincere" instead an adjective "Reliable", when it comes to topics like trustworthy.
Mutual synonyms
Both words in one sentence
- The above is one reason eyewitness testimony and even confessions aren't 100% reliable, even when the person providing it is trying to be sincere.
Source: Believing Their Own Lies - Iris from Phoenix Wright: Trials and Tribulations is thought of this way by Edgeworth after she calls Maya 'strong and reliable' and Larry 'sincere and hard-working'; however, they can be described as these under certain circumstances.
Source: Horrible Judge of Character
Cite this Source
Sincere and Reliable. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/reliable/sincere
Reliable & Sincere. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/reliable/sincere>.
Sincere or Reliable. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/reliable/sincere.
Google Ngram Viewer shows how "reliable" and "sincere" have occurred on timeline