age

n.

1. The period of one's existence

   span, lifetime, duration, time of life; see life 4.

   Particular stages of life include: infancy, childhood, girlhood, boyhood, adolescence, teens, youth, adulthood, middle age, old age, dotage, sweet sixteen*, flaming youth*, anecdotage*.

2. Old age

   old age, advanced years, elderliness, senescence, antiquity, oldness, ancientness, decrepitude, superannuation, seniority, maturity, golden years, declining years, sunset years, winter of life, senectitude; see also sense 1.

3. A period of time

   epoch, era, period, time, century, decade, eon, generation, interval, interim, term, days (of someone or something); see also life 4, period 1.

4. *A long time; often plural

   eon, eternity, years, dog's age*, coon's age*, donkey's years*, month of Sundays*. See syn. study at period.

of age

age

v.

1. To grow old

   grow old, get on, get on in years, grow feeble, decline, wane, advance in years, wrinkle, deteriorate, fail, waste away, turn gray, turn white, show one's years, show one's age, have one foot in the grave*, go downhill*, be over the hill*.

2. To mature

   ripen, develop, mellow, mature; see grow 2.