The Collaborative International Dictionary
Grudger \Grudg"er\ (gr[u^]j"[~e]r), n. One who grudges.
Grudge \Grudge\ (gr[u^]j), v. t. [imp. & p. p. Grudger; p. pr. & vb. n. Grudging.] [OE. grutchen, gruchen, grochen, to murmur, grumble, OF. grochier, grouchier, grocier, groucier; cf. Icel. krytja to murmur, krutr a murmur, or E. grunt.]
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To look upon with desire to possess or to appropriate; to envy (one) the possession of; to begrudge; to covet; to give with reluctance; to desire to get back again; -- followed by the direct object only, or by both the direct and indirect objects.
Tis not in thee To grudge my pleasures, to cut off my train.
--Shak.I have often heard the Presbyterians say, they did not grudge us our employments.
--Swift.They have grudged us contribution.
--Shak. -
To hold or harbor with malicious disposition or purpose; to cherish enviously. [Obs.]
Perish they That grudge one thought against your majesty !
--Shak.
Wiktionary
n. Someone who hold a grudge.
Usage examples of "grudger".
In a population consisting largely of cheats, a single grudger would not be very successful.
If grudgers are rare in comparison with cheats, the grudger gene will go extinct.
This is because for any one rare cheat there is only a small chance of his encountering the same grudger twice: therefore the proportion of individuals in the population who bear a grudge against any given cheat will be small.
Cheat is also an ESS, however, because a population consisting largely of cheats will not be invaded by either grudger or sucker.
In a population of grudgers and suckers it is impossible to tell which is which.
Once the grudgers manage to build up in numbers so that they reach a critical proportion, however, their chance of meeting each other becomes sufficiently great to off-set their wasted effort in grooming cheats.
Grudger does indeed turn out to be an evolutionarily stable strategy against sucker and cheat, in the sense that, in a population consisting largely of Grudgers, neither cheat nor sucker will invade.
Note incidentally that, although a population of cheats may be more likely to go extinct than a population of grudgers, this in no way affects its status as an ESS.
During the precipitous decline of the suckers, the grudgers have been slowly decreasing in numbers, taking a battering from the prospering cheats, but just managing to hold their own.
However, slowly and inexorably the cheats are driven out of existence, and the grudgers are left in sole possession.
Paradoxically, the presence of the suckers actually endangered the grudgers early on in the story because they were responsible for the temporary prosperity of the cheats.
We met the equivalent of this knife-edge, you will remember, in the story of the Grudgers and Cheats in Chapter 10.