adv.
In spite of everything; anyway: continues to work regardless.
adj.
Heedless; unmindful.
regardlessly re·gard'less·ly adv.
regardlessness re·gard'less·ness n.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
