Boom
Boom noun - A loud explosive sound.
Happy days and boom are semantically related In some cases you can use "Happy days" instead a noun "Boom".
Happy days
Boom and happy days are semantically related in favorable outcome topic. You can use "Boom" instead a noun phrase "Happy days".
Cite this Source
Happy days and Boom. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/boom/happy_days
Boom & Happy days. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/boom/happy_days>.
Happy days or Boom. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/boom/happy_days.
Google Ngram Viewer shows how "boom" and "happy days" have occurred on timeline