S: (adj) fair, just (free from favoritism or self-interest or bias or deception; conforming with established standards or rules) "a fair referee"; "fair deal"; "on a fair footing"; "a fair fight"; "by fair means or foul"
S: (adj) logical (capable of or reflecting the capability for correct and valid reasoning) "a logical mind"
S: (adj) analytic, analytical (of a proposition that is necessarily true independent of fact or experience) "`all spinsters are unmarried' is an analytic proposition"
S: (adj) synthetic, synthetical (of a proposition whose truth value is determined by observation or facts) "`all men are arrogant' is a synthetic proposition"
S: (adj) rational (consistent with or based on or using reason) "rational behavior"; "a process of rational inference"; "rational thought"
S: (adj) reasonable, sensible (showing reason or sound judgment) "a sensible choice"; "a sensible person"