Clumsy in form or manner; awkward: clunky high-heel shoes. (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 "clunky" in a sentence
"The mythos upon which this movie hangs is admittedly a tad clunky from a Western standpoint - though it makes for a perfectly serviceable Eastern legend."
"You HATE the book, or the first sentence has glaring grammatical errors, or the whole point of the book is obtuse and lost in clunky prose."
"Cheryl says it is a little bit "clunky" -- access is not so fast, however, it is a growing free tool for very young children."