adv.
In the first place; to begin with.
USAGE NOTE It is well established that either first or firstly can be used to begin an enumeration: Our objectives are, first (or firstly), to recover from last year's slump. Any succeeding items should be introduced by words parallel to the form that is chosen, as in first . . . second . . . third or firstly . . . secondly . . . thirdly.
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.
