Development
Development noun - The act or process of going from the simple or basic to the complex or advanced.
Happy days and development are semantically related. In some cases you can use "Happy days" instead a noun "Development".
Happy days
Development and happy days are semantically related. Sometimes you can use "Development" instead a noun phrase "Happy days".
Cite this Source
Happy days and Development. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/development/happy_days
Development & Happy days. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/development/happy_days>.
Happy days or Development. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/development/happy_days.
Google Ngram Viewer shows how "development" and "happy days" have occurred on timeline