Wordnet 3.0
ADJECTIVE (1)
1. 
 of or belonging to or occurring every day; 
- Example: "daily routine"- Example: "a daily paper"[syn: daily, day-to-day, day-by-day, day-after-day]
WordNet (r) 3.0 (2006):
day-by-day
    adj 1: of or belonging to or occurring every day; "daily
           routine"; "a daily paper" [syn: daily, day-to-day,
           day-by-day, day-after-day]