Serving to smash: a smashing blow to the head. (adjective)
Informal Extraordinarily impressive or fine; wonderful: a smashing success. (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 "smashing" in a sentence
"Maeve giggled and decided that she was going to use the word smashing more often."
"You may have 100,000 hits, Kerron m'lad, but where's the mention of a fictional non-entity in the strictest possible sense of the term smashing you as Top Labour Blogging Personality?"
"Their success in smashing the wall between investment and commercial banking is the source of our current misery."