CURMUDGEON
curmudgeon
(noun) a crusty irascible cantankerous old person full of stubborn ideas
Source: WordNet® 3.1
Etymology
Noun
curmudgeon (plural curmudgeons)
(archaic) A miser.
An ill-tempered person full of stubborn ideas or opinions.
Synonym: crank
Source: Wiktionary
Cur*mudg"eon (kr-mj"n), n. Etym: [OE. cornmudgin, where -mudgin is
prob. from OF. muchier, mucier, F. musser to hide; of uncertain
origin; cf. OE. muchares skulking thieves, E. miche, micher.]
Definition: An avaricious, grasping fellow; a miser; a niggard; a churl.
A gray-headed curmudgeon of a negro. W. Irving.
Source: Webster’s Unabridged Dictionary 1913 Edition