Wordnet 3.0
ADJECTIVE (1)
1. 
 marked by no noteworthy or significant events; 
- Example: "an uneventful life"- Example: "the voyage was pleasant and uneventful"- Example: "recovery was uneventful"
The Collaborative International Dictionary of English v.0.48:
Uneventful \Uneventful\
   See eventful.
WordNet (r) 3.0 (2006):
uneventful
    adj 1: marked by no noteworthy or significant events; "an
           uneventful life"; "the voyage was pleasant and
           uneventful"; "recovery was uneventful" [ant: eventful]
Moby Thesaurus II by Grady Ward, 1.0:
32 Moby Thesaurus words for "uneventful":
   blah, broken-record, commonplace, drearisome, dreary, dry,
   dryasdust, dull, dusty, everlasting, harping, humdrum, invariable,
   jog-trot, long-winded, monotonous, ordinary, prolix, prosaic,
   singsong, tedious, treadmill, unamusing, unenjoyable,
   unentertaining, unexceptional, unexciting, unfunny, uninteresting,
   unnoteworthy, unvarying, unwitty