1. in a way that does not show signs of aging; appearing young or timeless
2. in a manner that is not affected by or limited to a particular age or time period

Examples

• She dressed agelessly, in classic styles that suited her at any stage of life.
• The actress remained agelessly beautiful throughout her career.
• The design of the building is agelessly elegant and still looks modern today.
• He moved agelessly across the dance floor with grace and energy.
• The novel's themes speak agelessly to readers of all generations.
• She carried herself agelessly, with the confidence of someone who had transcended time.