nothingburger
no·thing·burg·er
Of less importance than its treatment suggestsOf less importance than its treatment suggests; insignificant, unimportant; also, bland or unremarkable in appearance or impact.
UK/ˈnʌθɪŋbɜːɡə/US/ˈnʌθɪŋˌbɝɡɚ/
Meaning
1 senses(informal, not comparable)Of less importance than its treatment suggests; insignificant, unimportant; also, bland or unremarkable in appearance or impact.