say it: hak
hack is a noun and verb meaning "one who works hard at boring tasks". It carries 16 recorded senses.
one who works hard at boring tasks
a politician who belongs to a small clique that controls a political party for private rather than public ends
a mediocre and disdained writer
a tool (as a hoe or pick or mattock) used for breaking up the surface of the soil
a horse kept for hire
a saddle horse used for transportation rather than sport etc.
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for hack come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.