Source : Webster's Revised Unabridged Dictionary (1913)

Gumption \Gump"tion\, n. [OE. gom, gome, attention; akin to AS.
   ge['o]mian, gyman, to regard, observe, gyme care, OS. gomean
   to heed, Goth. gaumjan to see, notice.]
   1. Capacity; shrewdness; common sense. [Colloq.]

Source : WordNet®

gumption
     n 1: sound practical judgment; "I can't see the sense in doing it
          now"; "he hasn't got the sense God gave little green
          apples"; "fortunately she had the good sense to run
          away" [syn: {common sense}, {good sense}, {horse sense},
           {sense}, {mother wit}]
     2: fortitude and determination; "he didn't have the guts to try
        it" [syn: {backbone}, {grit}, {guts}, {moxie}, {sand}]