1. the numbers, years, or temperatures from 80 to 89
2. the decade from 1980 to 1989

1. of or relating to numbers, years, or temperatures from 80 to 89

Examples

• The temperature reached the eighties yesterday afternoon.
• She is in her eighties and still very active.
• The eighties were a transformative decade for music and fashion.
• He scored in the eighties on most of his exams.
• My grandparents met back in the eighties.
• The stock market was volatile during the eighties.
• Eighties fashion is making a comeback among young people.