not interesting or exciting : dull or boring
"Our films and literature are awash with insipid female characters, but The Hunger Games's Katniss Everdeen can truly be defined as ass-kicking." - Leah Hyslop, telegraph.co.uk, October 30, 2013
About the Word:
The history of this word is far from insipid. Its Latin ancestor translates very loosely as "without wisdom, good taste, or good sense." That ancestor comes from sapere, which means "to taste," "to have good taste," or "to be wise." Sapere also gave us savor, savant, and sage.