Every Rose has its Thorn

Aculeate [ê-'kyu-lee-yêt]

Definition: Having a stinger, like a bee or wasp, or sharp prickles, like a rose or thistle.

If you know someone with a prickly personality, you will find today's word handy, "Otto Mattick has aculeate tongue capable of inflicting considerable mental pain if roiled." You could also call Otto's barbed words 'aculeate.'

From YourDictionary.com