80, because the word -octo- is in it and words with -octo- or something like that in it would most likely have something to do with 8. Like these words:octopus- 8 legsocho- 8 in Spanishoctave- move 8...
80 - 89
80-89 years old
trigenarian
A nanogenarian is a person between 90 and 99 years of age.
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