Well, could you define murder, without using its opposite ?
 
You've just give linguists a problem.  Here's a whole slew of definitions of death, and for the most part, they state or insinuate the opposite, something which you disallow.
 
–adjective 1.no longer living; deprived of life: 
dead people; dead flowers; dead animals. 2.
brain-dead. 3.not endowed with life; inanimate: 
dead stones. 4.resembling death; deathlike: 
a dead sleep; a dead faint. 5.bereft of sensation; numb: 
He was half dead with fright. My leg feels dead. 6.lacking sensitivity of feeling; insensitive: 
dead to the needs of others. 7.incapable of being emotionally moved; unresponsive: 
dead to the nuances of the music. 8.(of an emotion) no longer felt; ended; extinguished: 
a dead passion; dead affections. 9.no longer current or prevalent, as in effect, significance, or practice; obsolete: 
a dead law; a dead controversy. 10.no longer functioning, operating, or productive: 
a dead motor; a dead battery. 11.not moving or circulating; stagnant; stale: 
dead water; dead air. 12.utterly tired; exhausted: 
They felt dead from the six-hour trip. 13.(of a language) no longer in use as a sole means of oral communication among a people: 
Latin is a dead language. 14.without vitality, spirit, enthusiasm, or the like: 
a dead party. 15.lacking the customary activity; dull; inactive: 
a dead business day. 16.complete; absolute: 
dead silence; The plan was a dead loss. 17.sudden or abrupt, as the complete stoppage of an action: 
The bus came to a dead stop. 18.put out; extinguished: 
a dead cigarette. 19.without resilience or bounce: 
a dead tennis ball. 20.infertile; barren: 
dead land. 21.exact; precise: 
the dead center of a circle. 22.accurate; sure; unerring: 
a dead shot. 23.direct; straight: 
a dead line. 24.tasteless or flat, as a beverage: 
a dead soft drink. 25.flat rather than glossy, bright, or brilliant: 
The house was painted dead white. 26.without resonance; anechoic: 
dead sound; a dead wall surface of a recording studio. 27.not fruitful; unproductive: 
dead capital. 28.
Law. deprived of civil rights so that one is in the state of civil death, esp. deprived of the rights of property.29.
Sports. out of play: 
a dead ball. 30.(of a golf ball) lying so close to the hole as to make holing on the next stroke a virtual certainty.31.(of type or copy) having been used or rejected.32.
Electricity. a.free from any electric connection to a source of potential difference and from electric charge.b.not having a potential different from that of the earth.33.
Metallurgy. (of steel) a.fully killed.b.unresponsive to heat treatment.34.(of the mouth of a horse) no longer sensitive to the pressure of a bit.35.noting any rope in a tackle that does not pass over a pulley or is not rove through a block.
–noun 36.the period of greatest darkness, coldness, etc.: 
the dead of night; the dead of winter. 37.
the dead, dead persons collectively: 
Prayers were recited for the dead. 
–adverb 38.absolutely; completely: 
dead right; dead tired. 39.with sudden and total stoppage of motion, action, or the like: 
He stopped dead. 40.directly; exactly; straight: 
The island lay dead ahead. 
—Idioms 41.
dead in the water, completely inactive or inoperable; no longer in action or under consideration: 
Our plans to expand the business have been dead in the water for the past two months. 42.
dead to rights, in the very act of committing a crime, offense, or mistake; red-handed.
Origin: 
bef. 950; ME 
deed, OE 
dēad; c. Goth 
dauths, G 
tot, ON 
daudhr; orig. ptp. See 
die 1 
	
	
	
		
		
		
		
	
	
Related forms:
deadness, noun 
Synonyms:
1. Dead, deceased, extinct, lifeless refer to something that does not have or appear to have life. Dead is usually applied to something that had life but from which life is now gone: 
dead trees. Deceased, a more formal word than dead, is applied to human beings who no longer have life: 
a deceased member of the church. Extinct is applied to a race, species, or the like, no member of which is any longer alive: 
Mastodons are now extinct. Lifeless is applied to something that may or may not have had life but that does not have it or appear to have it now: 
The lifeless body of a child was taken out of the water. Minerals consist of lifeless materials. 6. unfeeling, indifferent, callous, cold. 
10. inert, inoperative. 
11. still, motionless. 
16. utter, entire, total. 
20. sterile.
Antonyms:
1. living, alive.