prenoon
adjective
pre·noon (ˌ)prē-ˈnün 
variants or pre-noon
: existing or occurring before noon
the prenoon hours
a prenoon start time
Hundreds of visitors and locals braved the pre-noon sun to get a glimpse of the show …
Alex Downes
Alex Downes… those people who long for a simpler time of pre-noon drinks, fedoras, and cocktail dresses. Alyssa Griffith
Alyssa Griffith
Word History
First Known Use
1903, in the meaning defined above