1. Previously unknown
   "developments on an unheard-of scale"

See also: unknown

• annoy
• annoyance
• annoyed
• annoyer
• annoying
• annoyingly
• annual
• annual fern
• annual general meeting
• annual parallax
• annual ring
• annual salt-marsh aster
• annualise
• annualize
• annually
• annualry
• annuitant
• annuity
• annuity in advance
• annul
• annular
• annular eclipse
• annular scotoma
• annulate
• annulated