ago UK /əˈɡəʊ/US /əˈɡoʊ/postposition 1adjective 2phrases 1 postposition1 •before nowI got married ten years ago.When they first met in 2000, my dad told my mom how he had gotten the money. The story begins 20 years ago. adjective2 •(dialect, no longer used) Gone; gone by; gone away; passed; passed away.in days ago / in days agone •(dialect, no longer used) Nearly gone; dead. (used in Devonshire at the turn of the 19th century)Woe the day—she is agone! Phrases with ago many moons agoA (very) long time ago.