GUMPTION
backbone, grit, guts, moxie, sand, gumption
(noun) fortitude and determination; “he didn’t have the guts to try it”
Source: WordNet® 3.1
Etymology
Noun
gumption (usually uncountable, plural gumptions)
(Britain) Common sense, initiative, resourcefulness. [from early 18th c.]
Synonym: gumph
(US) Boldness of enterprise; aggressiveness or initiative.
Synonyms: chutzpah, gumph, guts, spunk
(US) Energy of body and mind, enthusiasm.
Synonym: gumph
Source: Wiktionary
Gump"tion, n. Etym: [OE. gom, gome, attention; akin to AS. geĂłmian,
gyman, to regard, observe, gyme care, OS. gomean to heed, Goth.
gaumjan to see, notice.]
1. Capacity; shrewdness; common sense. [Colloq.]
One does not have gumption till one has been properly cheated. Lord
Lytton.
2. (Paint.)
(a) The art of preparing colors. Sir W. Scott.
(b) Megilp. Fairholt.
Source: Webster’s Unabridged Dictionary 1913 Edition