Happy
Happy adjective - Coming or happening by good luck especially unexpectedly.
Unintentional and happy are semantically related. In some cases you can use "Unintentional" instead an adjective "Happy".
Unintentional
Unintentional adjective - Happening by chance.
Happy and unintentional are semantically related. Sometimes you can use "Happy" instead an adjective "Unintentional".
Nearby Words: unintended, unintentionally
Mutual synonyms
Both words in one sentence
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And they were disappointed In fact, even the happy tone of the song is unintentional.
Source: Western Animation / 9 - Claudia Black (Vala Mal Doran) also got pregnant around the time of the end of the same season, but it was an unintentional subversion of the trope: they were already planning on a story that involved her getting pregnant so they were happy they wouldn't have to use special effects for it.
Source: Written-In Infirmity - The original versions of Pokémon Gold and Silver had a likely unintentional example: the happy music from Pewter City plays in Cinnabar Island, which has been destroyed during the Time Skip that separates these games from Pokémon Red and Blue.
Cite this Source
Unintentional and Happy. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/happy/unintentional
Happy & Unintentional. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/happy/unintentional>.
Unintentional or Happy. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/happy/unintentional.
Google Ngram Viewer shows how "happy" and "unintentional" have occurred on timeline