Far be it from to defend Meghan on ANYTHING, but she did use trepidatious correctly:
trep·i·da·tious
/ˌtrepəˈdāSHəs/
adjective
INFORMAL
apprehensive or nervous; filled with trepidation.
"if you're trepidatious about foreign travel, start with an English-speaking country"
or if you're a lifelong Republican, you're trepidatious about Democrats taking over the executive and legislative branches. Now we just have to work on the judicial branches!