lifetime
noun
[ ˈlʌɪftʌɪm ]
• the duration of a person's life.
• "a reward for a lifetime's work"
Similar:
lifespan,
life,
days,
duration of life,
allotted span,
course of life,
time on earth,
existence,
one's time,
one's career,
one's threescore years and ten,
this mortal coil,
one's born days,
of a lifetime
• (of a chance or experience) such as does not occur more than once in a person's life.
• "because of Frankie she had rejected the opportunity of a lifetime"