1) Incentive 2) Inciter 3) Inducement 1) Incentive 2) Inducement 3) Rational motive 
[horse] Motivator (foaled 22 February 2002) is a retired British Thoroughbred racehorse and active sire. In a racing career which lasted from August 2004 until October 2005 he ran seven times and won four races. He is best known as the winner of the 2005 Epsom Derby. He was retired to stud where he sired the Prix de l`Arc de Triomphe winner...
(from the article `Equestrian Sports`) Motivator looked like a good prospect in June when he won the Epsom Derby by five lengths over Walk in the Park. Up to that point Motivator was ...
term of endearment from a senior to a junior Marine, so named when the junior displays motivation for his or her duties.