Rashly or wastefully extravagant: prodigal expenditures on unneeded weaponry; a prodigal life.
Giving or given in abundance; lavish or profuse: prodigal praise. See Synonyms at profuse.
One who is given to wasteful luxury or extravagance.
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.