Definition of "thirty-something" [thirty-something]

• The time of life between 30 and 40 (noun)

WordNet. Princeton University. 2010.

• "Kevin, a thirty-something man in a black coat and black slacks, ventures a comment: From the beginning of the class to now I definitely feel different, but I still have a lot of reservations—about baptism, about commitment."
• "The hour-long meeting then concludes with a hymn entitled “When Faith Endures,” and an impromptu benediction is offered by a thirty-something man who carries his young daughter with him up to the podium and cradles her in his arms as he bows his head, asking “Father in Heaven” to bless those who could not be present at the worship meeting, and for help in “applying what we have learned here throughout the week.”"
• "But think about it from the point of view of his friends and family: he was a thirty-something former professional golfer and professional skier, who had given up “guaranteed” careers in architecture and the law to what?"