fortnightly (adv.)
- bimonthly
- biweekly
- daily
- hourly
- momently
- monthly
- quarterly
- semimonthly
- semiweekly
- weekly
- yearly
fortnightly (adj.)
- annual
- biannual
- biennial
- bimonthly
- biweekly
- catamenial
- centenary
- centennial
- daily
- diary
- diurnal
- hebdomadal
- hourly
- menstrual
- momentary
- monthly
- periodical
- pictorial
- quarterly
- quotidian
- secular
- semestral
- semiannual
- semimonthly
- semiweekly
- serial
- tertian
- triennial
- weekly
- yearly
