say it: DAY-too-day
day-to-day is an adjective meaning "of or belonging to or occurring every day". It carries one recorded sense.
of or belonging to or occurring every day
“daily routine”
“a daily paper”
Definitions, synonyms and semantic relations for day-to-day come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.