from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. year after year (literally: each year)
- adv. constantly
from the GNU version of the Collaborative International Dictionary of English
- adv. In a perennial manner.
from The Century Dictionary and Cyclopedia
- So as to be perennial; continually; without ceasing.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a perennial manner; repeatedly
perennial + -ly (Wiktionary)