Noun
(uncountable) The state or quality of being trendy.
(countable) The result or product of being trendy.
Source: en.wiktionary.orgThe allure of cold brew coffee goes far beyond its trendiness. Source: Internet
The concept of bibliotherapy -- a word coined in 1916 -- long teetered on the edge of trendiness. Source: Internet
“We like to incorporate a very classic look, because trendiness goes away and we want your home to last as long as you want it to,” says Leila. Source: Internet