Etymology
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life (n.)

Old English life (dative lif) "animated corporeal existence; lifetime, period between birth and death; the history of an individual from birth to death, written account of a person's life; way of life (good or bad); condition of being a living thing, opposite of death; spiritual existence imparted by God, through Christ, to the believer," from Proto-Germanic *leiban (source also of Old Norse lif "life, body," Old Frisian, Old Saxon lif "life, person, body," Dutch lijf "body," Old High German lib "life," German Leib "body"), properly "continuance, perseverance," from PIE root *leip- "to stick, adhere."

The noun associated with live (v.) "to live," which is literally "to continue, remain." Extended 1703 to inanimate objects, "term of duration or existence." Sense of "vitality, energy in action, expression, etc." is from 1580s. Meaning "conspicuously active part of human existence, pleasures or pursuits of the world or society" is by 1770s. Meaning "cause or source of living" led to the sense "vivifying or animating principle," and thus "one who keeps things lively" in life of the party (1787). Meaning "imprisonment for life, a life sentence" is from 1903. Paired alliteratively with limb from 1640s. Not on your life "by no means" is attested from 1896.

In gaming, an additional turn at play for a character; this transferred use was prefigured by uses in card-playing (1806), billiards (1856), etc., in reference to a certain number of chances or required objects without which one's turn at the game fails. The life "the living form or model, semblance" is from 1590s. Life-and-death "of dire importance" is from 1822; life-or-death (adj.) is from 1897. Life-jacket is from 1840; life-preserver from 1630s of anything that is meant to save a life, 1803 of devices worn to prevent drowning. Life-saver is from 1883, figurative use from 1909, as a brand of hard sugar candy from 1912, so called for shape.

Life-form is from 1861; life-cycle is from 1855; life-expectancy from 1847; life-history in biology from 1870; life-science from 1935. Life-work "the labor to which one's life has been devoted" is from 1848. Expression this is the life is from 1919; verbal shrug that's life is from 1924 (earlier such is life, 1778).

updated on December 07, 2018

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Definitions of life from WordNet

life (n.)
a characteristic state or mode of living;
social life
real life
city life
life (n.)
the experience of being alive; the course of human events and activities;
he could no longer cope with the complexities of life
Synonyms: living
life (n.)
the course of existence of an individual; the actions and events that occur in living;
get a life!" "he is trying to rebuild his life
he hoped for a new life in Australia
he wanted to live his own life without interference from others
life (n.)
the condition of living or the state of being alive;
life depends on many chemical and physical processes
while there's life there's hope
Synonyms: animation / living / aliveness
life (n.)
the period during which something is functional (as between birth and death);
he lived a long and happy life
the battery had a short life
Synonyms: lifetime / life-time / lifespan
life (n.)
the period between birth and the present time;
I have known him all his life
life (n.)
the period from the present until death;
he appointed himself emperor for life
life (n.)
a living person;
his heroism saved a life
life (n.)
animation and energy in action or expression;
it was a heavy play and the actors tried in vain to give life to it
Synonyms: liveliness / spirit / sprightliness
life (n.)
living things collectively;
the oceans are teeming with life
life (n.)
the organic phenomenon that distinguishes living organisms from nonliving ones;
there is no life on the moon
life (n.)
an account of the series of events making up a person's life;
Synonyms: biography / life story / life history
life (n.)
a motive for living;
pottery was his life
life (n.)
a prison term lasting as long as the prisoner lives;
he got life for killing the guard
Synonyms: life sentence
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.