12
daily(adjective, day, daily, regularity of recurrence periodicity)
8
quotidian(adjective, daily, regularity of recurrence periodicity)
6
daytime
6
everyday
4
annual
4
biennial
4
bimonthly
4
biweekly
4
circadian
4
day
4
day-to-day
4
monthly
4
triennial
3
book
3
centennial
3
fortnightly
3
hebdomadal
3
hourly
3
regular
3
weekly
11 years ago|3.3k views|share |citing 
APASmart Define. (2015). diurnal thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/diurnal/thesaurus/synonyms
ChicagoSmart Define. 2015. "diurnal thesaurus" https://smartdefine.org/diurnal/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, diurnal thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/diurnal/thesaurus/synonyms>.
MLASmart Define. "diurnal thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/diurnal/thesaurus/synonyms>