Synonyms for Six (same or very similar meaning)
WordNet sense 1 (the cardinal number that is the sum of five and one):
sextet, sextuplet, hexad, sestet, sise, sixer, VI, Captain Hicks, half a dozenWordNet sense 2 (denoting a quantity consisting of six items or units):
half-dozen, half dozenWordNet sense 3 (being or denoting a numerical quantity but not order):
cardinalFrom the ODE community, based on WordNetadd/edit