Wordnet 3.0
ADVERB (1)
1. 
 later than usual or than expected; 
- Example: "the train arrived late"- Example: "we awoke late"- Example: "the children came late to school"- Example: "notice came so tardily that we almost missed the deadline"- Example: "I belatedly wished her a happy birthday"[syn: late, belatedly, tardily]
WordNet (r) 3.0 (2006):
belatedly
    adv 1: later than usual or than expected; "the train arrived
           late"; "we awoke late"; "the children came late to
           school"; "notice came so tardily that we almost missed
           the deadline"; "I belatedly wished her a happy birthday"
           [syn: late, belatedly, tardily] [ant: ahead of
           time, early, too soon]