Synonyms for Slanted (same or very similar meaning)
WordNet sense 1 (favoring one person or side over another):
biased, colored, one-sided, colouredWordNet sense 2 (showing favoritism):
partial, unfairWordNet sense 3 (having an oblique or slanted direction):
aslant, diagonal, aslope, slanting, sloped, slopingWordNet sense 4 (at an angle to the horizontal or vertical position):
inclinedFrom the ODE community, based on WordNetadd/edit