1570s, "to cut unevenly" (implied in haggler), frequentative of Middle English haggen (“to chop”), variant of hacken (“to hack”), equivalent to hack + -le. Sense of "argue about price" first recorded c.1600, probably from notion of chopping away. Related: Haggled; haggling. Source: 
- (intransitive) To argue for a better deal, especially over prices with a seller.
- I haggled for a better price because the original price was too high.
- (transitive) To hack (cut crudely)
- Suffolk first died, and York, all haggled o'er, / Comes to him, where in gore he lay insteeped.
- 1884: Mark Twain, The Adventures of Huckleberry Finn, Chapter VIII
- I catched a catfish and haggled him open with my saw, and towards sundown I started my camp fire and had supper. Then I set out a line to catch some fish for breakfast.
- To stick at small matters; to chaffer; to higgle.
- Royalty and science never haggled about the value of blood.
- (to argue for a better deal): wrangle