Dictionary
-ly
1. a suffix forming adverbs from adjectives:
gladly; gradually; secondly.
2. a suffix meaning “every,” attached to certain nouns denoting units of time:
hourly; daily.
3. an adjective suffix meaning “-like”:
saintly; cowardly. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.