-ly

from The Collaborative International Dictionary of English v.0.48

-ly \-ly\suff. [OE. -lich, AS. -lic, orig. the same word as E.
   like, a. See {Like}, a.]
   A suffix forming adjectives and adverbs, and denoting
   likeness or resemblance; as, housewifely duties.

   Syn: -ish(postnominal), -y(postnominal).
        [1913 Webster]