Offbeat; crazy: "the loopy energy of Harpo Marx” ( Michael Wood). (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "loopy" in a sentence
"I had to drive because Richard was loopy from the Benadryl injection."
"I tried to reassure him that I'd be okay, but I was already acting loopy from the poison."
"This shot was my favorite: he was a handsome college graduate, she a high-school senior in loopy braids."