ago

Từ điển WordNet v3.1 - WordNet Dictionary

I - adjective

gone by;
or in the past
- two years ago
- 'agone' is an archaic word for 'ago'
• Syn:
agone
• Similar to:
past

II - adverb

in the past (Freq. 82)
- long ago
- sixty years ago my grandfather came to the U.S.