The Collaborative International Dictionary of English v.0.48:

Often \Of"ten\ ([o^]f"'n; 115), adv. [Compar. Oftener
   ([o^]f"'n*[~e]r); superl. Oftenest.] [Formerly also ofte,
   fr. oft. See Oft., adv.]
   Frequently; many times; not seldom.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Often \Of"ten\, a.
   Frequent; common; repeated. [R.] "Thine often infirmities."
   --1 Tim. v. 23.
   [1913 Webster]

         And weary thee with often welcomes.      --Beau. & Fl.
   [1913 Webster]

WordNet (r) 3.0 (2006):

often
    adv 1: many times at short intervals; "we often met over a cup
           of coffee" [syn: frequently, often, oftentimes,
           oft, ofttimes] [ant: infrequently, rarely,
           seldom]
    2: frequently or in great quantities; "I don't drink much"; "I
       don't travel much" [syn: much, a great deal, often]
    3: in many cases or instances