(きたい) An expectation – always good. (I expect that today will be lucky for me! I expect that my students will give 110% effort.)
(よそう) A prediction or forecast – good OR bad. (I predict that third quarter earnings will decline 9%. I predict that my sports team will win 33-21)   $$$
(ぜんてい) A presumption (something upon which you predicate your argument) Like, “Your argument against gay marriage presumes that the Christian God exists.”
(せんにゅうかん) A preconception  (that all gaijin steal things!) The meaning of先入観 is closer to ‘prejudice’ or ‘stereotype’ than the other words in this cluster.